Home / 31,612.10-47,421.79-11,627.78

Finding the Fourth Proportional to 31,612.10, 47,421.79 and 11,627.78

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Solution

The fourth proportional to 31,612.10, 47,421.79 and 11,627.78 is: 17,443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,612.10 : 47,421.79 = 11,627.78 : x
  2. Step 2: Convert to fraction form
    31,612.10/47,421.79 = 11,627.78/x
  3. Step 3: Cross multiply
    31,612.10x = 47,421.79 × 11,627.78
  4. Step 4: Simplify right side
    31,612.10x = 551,409,875.15
  5. Step 5: Solve for x
    x = 551,409,875.15/31,612.10
  6. Step 6: Final answer
    x = 17,443.00

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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.