Home / 31,538.30-47,307.45-21,647.59

Finding the Fourth Proportional to 31,538.30, 47,307.45 and 21,647.59

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Solution

The fourth proportional to 31,538.30, 47,307.45 and 21,647.59 is: 32,471.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.30 : 47,307.45 = 21,647.59 : x
  2. Step 2: Convert to fraction form
    31,538.30/47,307.45 = 21,647.59/x
  3. Step 3: Cross multiply
    31,538.30x = 47,307.45 × 21,647.59
  4. Step 4: Simplify right side
    31,538.30x = 1,024,092,173.31
  5. Step 5: Solve for x
    x = 1,024,092,173.31/31,538.30
  6. Step 6: Final answer
    x = 32,471.39

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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.