Home / 15,582.47-21,503.79-8,508.87

Finding the Fourth Proportional to 15,582.47, 21,503.79 and 8,508.87

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Solution

The fourth proportional to 15,582.47, 21,503.79 and 8,508.87 is: 11,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.47 : 21,503.79 = 8,508.87 : x
  2. Step 2: Convert to fraction form
    15,582.47/21,503.79 = 8,508.87/x
  3. Step 3: Cross multiply
    15,582.47x = 21,503.79 × 8,508.87
  4. Step 4: Simplify right side
    15,582.47x = 182,972,953.62
  5. Step 5: Solve for x
    x = 182,972,953.62/15,582.47
  6. Step 6: Final answer
    x = 11,742.23

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1.5x scale

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.