Home / 15,432.43-21,298.48-8,718.49

Finding the Fourth Proportional to 15,432.43, 21,298.48 and 8,718.49

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Solution

The fourth proportional to 15,432.43, 21,298.48 and 8,718.49 is: 12,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.43 : 21,298.48 = 8,718.49 : x
  2. Step 2: Convert to fraction form
    15,432.43/21,298.48 = 8,718.49/x
  3. Step 3: Cross multiply
    15,432.43x = 21,298.48 × 8,718.49
  4. Step 4: Simplify right side
    15,432.43x = 185,690,434.81
  5. Step 5: Solve for x
    x = 185,690,434.81/15,432.43
  6. Step 6: Final answer
    x = 12,032.48

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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.