Home / 31,513.38-47,265.21-13,980.12

Finding the Fourth Proportional to 31,513.38, 47,265.21 and 13,980.12

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Solution

The fourth proportional to 31,513.38, 47,265.21 and 13,980.12 is: 20,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,513.38 : 47,265.21 = 13,980.12 : x
  2. Step 2: Convert to fraction form
    31,513.38/47,265.21 = 13,980.12/x
  3. Step 3: Cross multiply
    31,513.38x = 47,265.21 × 13,980.12
  4. Step 4: Simplify right side
    31,513.38x = 660,773,307.63
  5. Step 5: Solve for x
    x = 660,773,307.63/31,513.38
  6. Step 6: Final answer
    x = 20,968.02

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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.