Home / 31,509.60-47,264.40-21,618.90

Finding the Fourth Proportional to 31,509.60, 47,264.40 and 21,618.90

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Solution

The fourth proportional to 31,509.60, 47,264.40 and 21,618.90 is: 32,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,509.60 : 47,264.40 = 21,618.90 : x
  2. Step 2: Convert to fraction form
    31,509.60/47,264.40 = 21,618.90/x
  3. Step 3: Cross multiply
    31,509.60x = 47,264.40 × 21,618.90
  4. Step 4: Simplify right side
    31,509.60x = 1,021,804,337.16
  5. Step 5: Solve for x
    x = 1,021,804,337.16/31,509.60
  6. Step 6: Final answer
    x = 32,428.35

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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.