Home / 13,087.13-18,058.83-7,421.18

Finding the Fourth Proportional to 13,087.13, 18,058.83 and 7,421.18

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Solution

The fourth proportional to 13,087.13, 18,058.83 and 7,421.18 is: 10,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.13 : 18,058.83 = 7,421.18 : x
  2. Step 2: Convert to fraction form
    13,087.13/18,058.83 = 7,421.18/x
  3. Step 3: Cross multiply
    13,087.13x = 18,058.83 × 7,421.18
  4. Step 4: Simplify right side
    13,087.13x = 134,017,828.02
  5. Step 5: Solve for x
    x = 134,017,828.02/13,087.13
  6. Step 6: Final answer
    x = 10,240.43

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Half scale
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Double scale
Find fourth proportional to 13,088.13, 18,060.21 and 7,422.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.