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Finding the Fourth Proportional to 12,497.70, 18,655.35 and 10,921.23

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Solution

The fourth proportional to 12,497.70, 18,655.35 and 10,921.23 is: 16,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497.70 : 18,655.35 = 10,921.23 : x
  2. Step 2: Convert to fraction form
    12,497.70/18,655.35 = 10,921.23/x
  3. Step 3: Cross multiply
    12,497.70x = 18,655.35 × 10,921.23
  4. Step 4: Simplify right side
    12,497.70x = 203,739,368.08
  5. Step 5: Solve for x
    x = 203,739,368.08/12,497.70
  6. Step 6: Final answer
    x = 16,302.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.