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Finding the Fourth Proportional to 42,424.56, 63,636.84 and 11,259

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Solution

The fourth proportional to 42,424.56, 63,636.84 and 11,259 is: 16,888.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,424.56 : 63,636.84 = 11,259 : x
  2. Step 2: Convert to fraction form
    42,424.56/63,636.84 = 11,259/x
  3. Step 3: Cross multiply
    42,424.56x = 63,636.84 × 11,259
  4. Step 4: Simplify right side
    42,424.56x = 716,487,181.56
  5. Step 5: Solve for x
    x = 716,487,181.56/42,424.56
  6. Step 6: Final answer
    x = 16,888.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.