Home / 31,395.12-47,082.60-13,864.56

Finding the Fourth Proportional to 31,395.12, 47,082.60 and 13,864.56

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Solution

The fourth proportional to 31,395.12, 47,082.60 and 13,864.56 is: 20,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395.12 : 47,082.60 = 13,864.56 : x
  2. Step 2: Convert to fraction form
    31,395.12/47,082.60 = 13,864.56/x
  3. Step 3: Cross multiply
    31,395.12x = 47,082.60 × 13,864.56
  4. Step 4: Simplify right side
    31,395.12x = 652,779,532.66
  5. Step 5: Solve for x
    x = 652,779,532.66/31,395.12
  6. Step 6: Final answer
    x = 20,792.39

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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.