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Finding the Fourth Proportional to 22,590.90, 31,157.03 and 15,898.70

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Solution

The fourth proportional to 22,590.90, 31,157.03 and 15,898.70 is: 21,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,590.90 : 31,157.03 = 15,898.70 : x
  2. Step 2: Convert to fraction form
    22,590.90/31,157.03 = 15,898.70/x
  3. Step 3: Cross multiply
    22,590.90x = 31,157.03 × 15,898.70
  4. Step 4: Simplify right side
    22,590.90x = 495,356,272.86
  5. Step 5: Solve for x
    x = 495,356,272.86/22,590.90
  6. Step 6: Final answer
    x = 21,927.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.