Home / 15,465.91-21,343.10-8,392.39

Finding the Fourth Proportional to 15,465.91, 21,343.10 and 8,392.39

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Solution

The fourth proportional to 15,465.91, 21,343.10 and 8,392.39 is: 11,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.91 : 21,343.10 = 8,392.39 : x
  2. Step 2: Convert to fraction form
    15,465.91/21,343.10 = 8,392.39/x
  3. Step 3: Cross multiply
    15,465.91x = 21,343.10 × 8,392.39
  4. Step 4: Simplify right side
    15,465.91x = 179,119,577.05
  5. Step 5: Solve for x
    x = 179,119,577.05/15,465.91
  6. Step 6: Final answer
    x = 11,581.57

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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.