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Finding the Fourth Proportional to 28,130.68, 42,158.76 and 14,954.68

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Solution

The fourth proportional to 28,130.68, 42,158.76 and 14,954.68 is: 22,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.68 : 42,158.76 = 14,954.68 : x
  2. Step 2: Convert to fraction form
    28,130.68/42,158.76 = 14,954.68/x
  3. Step 3: Cross multiply
    28,130.68x = 42,158.76 × 14,954.68
  4. Step 4: Simplify right side
    28,130.68x = 630,470,765.00
  5. Step 5: Solve for x
    x = 630,470,765.00/28,130.68
  6. Step 6: Final answer
    x = 22,412.21

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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.