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Finding the Fourth Proportional to 28,402.53, 42,602.25 and 8,679.54

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Solution

The fourth proportional to 28,402.53, 42,602.25 and 8,679.54 is: 13,018.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.53 : 42,602.25 = 8,679.54 : x
  2. Step 2: Convert to fraction form
    28,402.53/42,602.25 = 8,679.54/x
  3. Step 3: Cross multiply
    28,402.53x = 42,602.25 × 8,679.54
  4. Step 4: Simplify right side
    28,402.53x = 369,767,885.63
  5. Step 5: Solve for x
    x = 369,767,885.63/28,402.53
  6. Step 6: Final answer
    x = 13,018.84

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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.