Home / 31,514.18-47,278.57-13,985.38

Finding the Fourth Proportional to 31,514.18, 47,278.57 and 13,985.38

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Solution

The fourth proportional to 31,514.18, 47,278.57 and 13,985.38 is: 20,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.18 : 47,278.57 = 13,985.38 : x
  2. Step 2: Convert to fraction form
    31,514.18/47,278.57 = 13,985.38/x
  3. Step 3: Cross multiply
    31,514.18x = 47,278.57 × 13,985.38
  4. Step 4: Simplify right side
    31,514.18x = 661,208,614.15
  5. Step 5: Solve for x
    x = 661,208,614.15/31,514.18
  6. Step 6: Final answer
    x = 20,981.30

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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.