Home / 15,614.28-21,552.21-8,903.57

Finding the Fourth Proportional to 15,614.28, 21,552.21 and 8,903.57

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Solution

The fourth proportional to 15,614.28, 21,552.21 and 8,903.57 is: 12,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.28 : 21,552.21 = 8,903.57 : x
  2. Step 2: Convert to fraction form
    15,614.28/21,552.21 = 8,903.57/x
  3. Step 3: Cross multiply
    15,614.28x = 21,552.21 × 8,903.57
  4. Step 4: Simplify right side
    15,614.28x = 191,891,502.63
  5. Step 5: Solve for x
    x = 191,891,502.63/15,614.28
  6. Step 6: Final answer
    x = 12,289.49

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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.