Home / 20,688.95-31,009.12-9,572.15

Finding the Fourth Proportional to 20,688.95, 31,009.12 and 9,572.15

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Solution

The fourth proportional to 20,688.95, 31,009.12 and 9,572.15 is: 14,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.95 : 31,009.12 = 9,572.15 : x
  2. Step 2: Convert to fraction form
    20,688.95/31,009.12 = 9,572.15/x
  3. Step 3: Cross multiply
    20,688.95x = 31,009.12 × 9,572.15
  4. Step 4: Simplify right side
    20,688.95x = 296,824,037.50
  5. Step 5: Solve for x
    x = 296,824,037.50/20,688.95
  6. Step 6: Final answer
    x = 14,346.99

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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.