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Finding the Fourth Proportional to 9,543.89, 14,388.99 and 8,900.75

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Solution

The fourth proportional to 9,543.89, 14,388.99 and 8,900.75 is: 13,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,543.89 : 14,388.99 = 8,900.75 : x
  2. Step 2: Convert to fraction form
    9,543.89/14,388.99 = 8,900.75/x
  3. Step 3: Cross multiply
    9,543.89x = 14,388.99 × 8,900.75
  4. Step 4: Simplify right side
    9,543.89x = 128,072,730.80
  5. Step 5: Solve for x
    x = 128,072,730.80/9,543.89
  6. Step 6: Final answer
    x = 13,419.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.