Home / 28,981.50-43,456.28-8,985.47

Finding the Fourth Proportional to 28,981.50, 43,456.28 and 8,985.47

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Solution

The fourth proportional to 28,981.50, 43,456.28 and 8,985.47 is: 13,473.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.50 : 43,456.28 = 8,985.47 : x
  2. Step 2: Convert to fraction form
    28,981.50/43,456.28 = 8,985.47/x
  3. Step 3: Cross multiply
    28,981.50x = 43,456.28 × 8,985.47
  4. Step 4: Simplify right side
    28,981.50x = 390,474,838.04
  5. Step 5: Solve for x
    x = 390,474,838.04/28,981.50
  6. Step 6: Final answer
    x = 13,473.24

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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.