Home / 39,406.96-54,381.14-21,501.58

Finding the Fourth Proportional to 39,406.96, 54,381.14 and 21,501.58

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Solution

The fourth proportional to 39,406.96, 54,381.14 and 21,501.58 is: 29,671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.96 : 54,381.14 = 21,501.58 : x
  2. Step 2: Convert to fraction form
    39,406.96/54,381.14 = 21,501.58/x
  3. Step 3: Cross multiply
    39,406.96x = 54,381.14 × 21,501.58
  4. Step 4: Simplify right side
    39,406.96x = 1,169,280,432.20
  5. Step 5: Solve for x
    x = 1,169,280,432.20/39,406.96
  6. Step 6: Final answer
    x = 29,671.93

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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.