Home / 15,372.59-21,210.26-9,402.08

Finding the Fourth Proportional to 15,372.59, 21,210.26 and 9,402.08

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Solution

The fourth proportional to 15,372.59, 21,210.26 and 9,402.08 is: 12,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.59 : 21,210.26 = 9,402.08 : x
  2. Step 2: Convert to fraction form
    15,372.59/21,210.26 = 9,402.08/x
  3. Step 3: Cross multiply
    15,372.59x = 21,210.26 × 9,402.08
  4. Step 4: Simplify right side
    15,372.59x = 199,420,408.28
  5. Step 5: Solve for x
    x = 199,420,408.28/15,372.59
  6. Step 6: Final answer
    x = 12,972.47

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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.