Home / 31,115.34-42,938.10-17,687.16

Finding the Fourth Proportional to 31,115.34, 42,938.10 and 17,687.16

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Solution

The fourth proportional to 31,115.34, 42,938.10 and 17,687.16 is: 24,407.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,115.34 : 42,938.10 = 17,687.16 : x
  2. Step 2: Convert to fraction form
    31,115.34/42,938.10 = 17,687.16/x
  3. Step 3: Cross multiply
    31,115.34x = 42,938.10 × 17,687.16
  4. Step 4: Simplify right side
    31,115.34x = 759,453,044.80
  5. Step 5: Solve for x
    x = 759,453,044.80/31,115.34
  6. Step 6: Final answer
    x = 24,407.67

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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.