Home / 53,929.21-80,930.28-18,869.17

Finding the Fourth Proportional to 53,929.21, 80,930.28 and 18,869.17

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Solution

The fourth proportional to 53,929.21, 80,930.28 and 18,869.17 is: 28,316.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,929.21 : 80,930.28 = 18,869.17 : x
  2. Step 2: Convert to fraction form
    53,929.21/80,930.28 = 18,869.17/x
  3. Step 3: Cross multiply
    53,929.21x = 80,930.28 × 18,869.17
  4. Step 4: Simplify right side
    53,929.21x = 1,527,087,211.47
  5. Step 5: Solve for x
    x = 1,527,087,211.47/53,929.21
  6. Step 6: Final answer
    x = 28,316.51

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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.