Home / 13,086.08-18,058.70-7,117.80

Finding the Fourth Proportional to 13,086.08, 18,058.70 and 7,117.80

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Solution

The fourth proportional to 13,086.08, 18,058.70 and 7,117.80 is: 9,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.08 : 18,058.70 = 7,117.80 : x
  2. Step 2: Convert to fraction form
    13,086.08/18,058.70 = 7,117.80/x
  3. Step 3: Cross multiply
    13,086.08x = 18,058.70 × 7,117.80
  4. Step 4: Simplify right side
    13,086.08x = 128,538,214.86
  5. Step 5: Solve for x
    x = 128,538,214.86/13,086.08
  6. Step 6: Final answer
    x = 9,822.51

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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.