Home / 15,760.17-21,750.01-8,686.58

Finding the Fourth Proportional to 15,760.17, 21,750.01 and 8,686.58

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Solution

The fourth proportional to 15,760.17, 21,750.01 and 8,686.58 is: 11,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760.17 : 21,750.01 = 8,686.58 : x
  2. Step 2: Convert to fraction form
    15,760.17/21,750.01 = 8,686.58/x
  3. Step 3: Cross multiply
    15,760.17x = 21,750.01 × 8,686.58
  4. Step 4: Simplify right side
    15,760.17x = 188,933,071.40
  5. Step 5: Solve for x
    x = 188,933,071.40/15,760.17
  6. Step 6: Final answer
    x = 11,988.01

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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.