Home / 31,964.34-47,946.46-8,590.78

Finding the Fourth Proportional to 31,964.34, 47,946.46 and 8,590.78

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Solution

The fourth proportional to 31,964.34, 47,946.46 and 8,590.78 is: 12,886.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,964.34 : 47,946.46 = 8,590.78 : x
  2. Step 2: Convert to fraction form
    31,964.34/47,946.46 = 8,590.78/x
  3. Step 3: Cross multiply
    31,964.34x = 47,946.46 × 8,590.78
  4. Step 4: Simplify right side
    31,964.34x = 411,897,489.64
  5. Step 5: Solve for x
    x = 411,897,489.64/31,964.34
  6. Step 6: Final answer
    x = 12,886.16

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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.