Home / 31,885.62-47,775.88-18,521.10

Finding the Fourth Proportional to 31,885.62, 47,775.88 and 18,521.10

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Solution

The fourth proportional to 31,885.62, 47,775.88 and 18,521.10 is: 27,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.62 : 47,775.88 = 18,521.10 : x
  2. Step 2: Convert to fraction form
    31,885.62/47,775.88 = 18,521.10/x
  3. Step 3: Cross multiply
    31,885.62x = 47,775.88 × 18,521.10
  4. Step 4: Simplify right side
    31,885.62x = 884,861,851.07
  5. Step 5: Solve for x
    x = 884,861,851.07/31,885.62
  6. Step 6: Final answer
    x = 27,751.13

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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.