Home / 20,707.79-31,014.95-9,591.12

Finding the Fourth Proportional to 20,707.79, 31,014.95 and 9,591.12

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Solution

The fourth proportional to 20,707.79, 31,014.95 and 9,591.12 is: 14,365.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.79 : 31,014.95 = 9,591.12 : x
  2. Step 2: Convert to fraction form
    20,707.79/31,014.95 = 9,591.12/x
  3. Step 3: Cross multiply
    20,707.79x = 31,014.95 × 9,591.12
  4. Step 4: Simplify right side
    20,707.79x = 297,468,059.29
  5. Step 5: Solve for x
    x = 297,468,059.29/20,707.79
  6. Step 6: Final answer
    x = 14,365.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.