Home / 15,470.15-21,294.86-13,352.40

Finding the Fourth Proportional to 15,470.15, 21,294.86 and 13,352.40

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Solution

The fourth proportional to 15,470.15, 21,294.86 and 13,352.40 is: 18,379.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.15 : 21,294.86 = 13,352.40 : x
  2. Step 2: Convert to fraction form
    15,470.15/21,294.86 = 13,352.40/x
  3. Step 3: Cross multiply
    15,470.15x = 21,294.86 × 13,352.40
  4. Step 4: Simplify right side
    15,470.15x = 284,337,421.90
  5. Step 5: Solve for x
    x = 284,337,421.90/15,470.15
  6. Step 6: Final answer
    x = 18,379.75

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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.