Home / 20,856.48-31,237.14-13,045.92

Finding the Fourth Proportional to 20,856.48, 31,237.14 and 13,045.92

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Solution

The fourth proportional to 20,856.48, 31,237.14 and 13,045.92 is: 19,539.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.48 : 31,237.14 = 13,045.92 : x
  2. Step 2: Convert to fraction form
    20,856.48/31,237.14 = 13,045.92/x
  3. Step 3: Cross multiply
    20,856.48x = 31,237.14 × 13,045.92
  4. Step 4: Simplify right side
    20,856.48x = 407,517,229.47
  5. Step 5: Solve for x
    x = 407,517,229.47/20,856.48
  6. Step 6: Final answer
    x = 19,539.12

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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.