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Finding the Fourth Proportional to 28,041.60, 42,062.40 and 16,982.40

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Solution

The fourth proportional to 28,041.60, 42,062.40 and 16,982.40 is: 25,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.60 : 42,062.40 = 16,982.40 : x
  2. Step 2: Convert to fraction form
    28,041.60/42,062.40 = 16,982.40/x
  3. Step 3: Cross multiply
    28,041.60x = 42,062.40 × 16,982.40
  4. Step 4: Simplify right side
    28,041.60x = 714,320,501.76
  5. Step 5: Solve for x
    x = 714,320,501.76/28,041.60
  6. Step 6: Final answer
    x = 25,473.60

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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.