Home / 47,931.21-71,897-14,651.15

Finding the Fourth Proportional to 47,931.21, 71,897 and 14,651.15

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Solution

The fourth proportional to 47,931.21, 71,897 and 14,651.15 is: 21,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,931.21 : 71,897 = 14,651.15 : x
  2. Step 2: Convert to fraction form
    47,931.21/71,897 = 14,651.15/x
  3. Step 3: Cross multiply
    47,931.21x = 71,897 × 14,651.15
  4. Step 4: Simplify right side
    47,931.21x = 1,053,373,731.55
  5. Step 5: Solve for x
    x = 1,053,373,731.55/47,931.21
  6. Step 6: Final answer
    x = 21,976.78

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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.