Home / 20,689.24-31,009.56-9,572.45

Finding the Fourth Proportional to 20,689.24, 31,009.56 and 9,572.45

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Solution

The fourth proportional to 20,689.24, 31,009.56 and 9,572.45 is: 14,347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.24 : 31,009.56 = 9,572.45 : x
  2. Step 2: Convert to fraction form
    20,689.24/31,009.56 = 9,572.45/x
  3. Step 3: Cross multiply
    20,689.24x = 31,009.56 × 9,572.45
  4. Step 4: Simplify right side
    20,689.24x = 296,837,462.62
  5. Step 5: Solve for x
    x = 296,837,462.62/20,689.24
  6. Step 6: Final answer
    x = 14,347.43

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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.