Home / 22,985.18-31,731.64-15,471.02

Finding the Fourth Proportional to 22,985.18, 31,731.64 and 15,471.02

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Solution

The fourth proportional to 22,985.18, 31,731.64 and 15,471.02 is: 21,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,985.18 : 31,731.64 = 15,471.02 : x
  2. Step 2: Convert to fraction form
    22,985.18/31,731.64 = 15,471.02/x
  3. Step 3: Cross multiply
    22,985.18x = 31,731.64 × 15,471.02
  4. Step 4: Simplify right side
    22,985.18x = 490,920,837.07
  5. Step 5: Solve for x
    x = 490,920,837.07/22,985.18
  6. Step 6: Final answer
    x = 21,358.15

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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.