Home / 15,731.95-21,710.05-9,017.28

Finding the Fourth Proportional to 15,731.95, 21,710.05 and 9,017.28

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Solution

The fourth proportional to 15,731.95, 21,710.05 and 9,017.28 is: 12,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.95 : 21,710.05 = 9,017.28 : x
  2. Step 2: Convert to fraction form
    15,731.95/21,710.05 = 9,017.28/x
  3. Step 3: Cross multiply
    15,731.95x = 21,710.05 × 9,017.28
  4. Step 4: Simplify right side
    15,731.95x = 195,765,599.66
  5. Step 5: Solve for x
    x = 195,765,599.66/15,731.95
  6. Step 6: Final answer
    x = 12,443.82

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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.