Home / 21,098.75-31,659.12-15,303.20

Finding the Fourth Proportional to 21,098.75, 31,659.12 and 15,303.20

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Solution

The fourth proportional to 21,098.75, 31,659.12 and 15,303.20 is: 22,962.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.75 : 31,659.12 = 15,303.20 : x
  2. Step 2: Convert to fraction form
    21,098.75/31,659.12 = 15,303.20/x
  3. Step 3: Cross multiply
    21,098.75x = 31,659.12 × 15,303.20
  4. Step 4: Simplify right side
    21,098.75x = 484,485,686.89
  5. Step 5: Solve for x
    x = 484,485,686.89/21,098.75
  6. Step 6: Final answer
    x = 22,962.77

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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.