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Finding the Fourth Proportional to 15,602.65, 21,531.69 and 8,529.12

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Solution

The fourth proportional to 15,602.65, 21,531.69 and 8,529.12 is: 11,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.65 : 21,531.69 = 8,529.12 : x
  2. Step 2: Convert to fraction form
    15,602.65/21,531.69 = 8,529.12/x
  3. Step 3: Cross multiply
    15,602.65x = 21,531.69 × 8,529.12
  4. Step 4: Simplify right side
    15,602.65x = 183,646,367.81
  5. Step 5: Solve for x
    x = 183,646,367.81/15,602.65
  6. Step 6: Final answer
    x = 11,770.21

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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.