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Finding the Fourth Proportional to 15,614.66, 21,552.74 and 8,903.94

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Solution

The fourth proportional to 15,614.66, 21,552.74 and 8,903.94 is: 12,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.66 : 21,552.74 = 8,903.94 : x
  2. Step 2: Convert to fraction form
    15,614.66/21,552.74 = 8,903.94/x
  3. Step 3: Cross multiply
    15,614.66x = 21,552.74 × 8,903.94
  4. Step 4: Simplify right side
    15,614.66x = 191,904,259.28
  5. Step 5: Solve for x
    x = 191,904,259.28/15,614.66
  6. Step 6: Final answer
    x = 12,290.01

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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.