Home / 31,841.35-47,780.48-13,117.90

Finding the Fourth Proportional to 31,841.35, 47,780.48 and 13,117.90

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Solution

The fourth proportional to 31,841.35, 47,780.48 and 13,117.90 is: 19,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,841.35 : 47,780.48 = 13,117.90 : x
  2. Step 2: Convert to fraction form
    31,841.35/47,780.48 = 13,117.90/x
  3. Step 3: Cross multiply
    31,841.35x = 47,780.48 × 13,117.90
  4. Step 4: Simplify right side
    31,841.35x = 626,779,561.52
  5. Step 5: Solve for x
    x = 626,779,561.52/31,841.35
  6. Step 6: Final answer
    x = 19,684.45

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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.