Home / 15,731.53-21,708.23-9,017.74

Finding the Fourth Proportional to 15,731.53, 21,708.23 and 9,017.74

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Solution

The fourth proportional to 15,731.53, 21,708.23 and 9,017.74 is: 12,443.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.53 : 21,708.23 = 9,017.74 : x
  2. Step 2: Convert to fraction form
    15,731.53/21,708.23 = 9,017.74/x
  3. Step 3: Cross multiply
    15,731.53x = 21,708.23 × 9,017.74
  4. Step 4: Simplify right side
    15,731.53x = 195,759,174.00
  5. Step 5: Solve for x
    x = 195,759,174.00/15,731.53
  6. Step 6: Final answer
    x = 12,443.75

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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.