Home / 20,572.48-30,864.40-6,721.52

Finding the Fourth Proportional to 20,572.48, 30,864.40 and 6,721.52

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Solution

The fourth proportional to 20,572.48, 30,864.40 and 6,721.52 is: 10,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.48 : 30,864.40 = 6,721.52 : x
  2. Step 2: Convert to fraction form
    20,572.48/30,864.40 = 6,721.52/x
  3. Step 3: Cross multiply
    20,572.48x = 30,864.40 × 6,721.52
  4. Step 4: Simplify right side
    20,572.48x = 207,455,681.89
  5. Step 5: Solve for x
    x = 207,455,681.89/20,572.48
  6. Step 6: Final answer
    x = 10,084.14

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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.