Home / 13,064.40-18,028.60-7,398.72

Finding the Fourth Proportional to 13,064.40, 18,028.60 and 7,398.72

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Solution

The fourth proportional to 13,064.40, 18,028.60 and 7,398.72 is: 10,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,064.40 : 18,028.60 = 7,398.72 : x
  2. Step 2: Convert to fraction form
    13,064.40/18,028.60 = 7,398.72/x
  3. Step 3: Cross multiply
    13,064.40x = 18,028.60 × 7,398.72
  4. Step 4: Simplify right side
    13,064.40x = 133,388,563.39
  5. Step 5: Solve for x
    x = 133,388,563.39/13,064.40
  6. Step 6: Final answer
    x = 10,210.08

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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.