Home / 15,652.64-21,603.61-9,686.99

Finding the Fourth Proportional to 15,652.64, 21,603.61 and 9,686.99

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Solution

The fourth proportional to 15,652.64, 21,603.61 and 9,686.99 is: 13,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,652.64 : 21,603.61 = 9,686.99 : x
  2. Step 2: Convert to fraction form
    15,652.64/21,603.61 = 9,686.99/x
  3. Step 3: Cross multiply
    15,652.64x = 21,603.61 × 9,686.99
  4. Step 4: Simplify right side
    15,652.64x = 209,274,020.15
  5. Step 5: Solve for x
    x = 209,274,020.15/15,652.64
  6. Step 6: Final answer
    x = 13,369.88

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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.