Home / 39,515.59-54,529.50-21,607.12

Finding the Fourth Proportional to 39,515.59, 54,529.50 and 21,607.12

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Solution

The fourth proportional to 39,515.59, 54,529.50 and 21,607.12 is: 29,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,515.59 : 54,529.50 = 21,607.12 : x
  2. Step 2: Convert to fraction form
    39,515.59/54,529.50 = 21,607.12/x
  3. Step 3: Cross multiply
    39,515.59x = 54,529.50 × 21,607.12
  4. Step 4: Simplify right side
    39,515.59x = 1,178,225,450.04
  5. Step 5: Solve for x
    x = 1,178,225,450.04/39,515.59
  6. Step 6: Final answer
    x = 29,816.72

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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.