Home / 28,178.25-42,270.56-9,459.59

Finding the Fourth Proportional to 28,178.25, 42,270.56 and 9,459.59

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Solution

The fourth proportional to 28,178.25, 42,270.56 and 9,459.59 is: 14,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.25 : 42,270.56 = 9,459.59 : x
  2. Step 2: Convert to fraction form
    28,178.25/42,270.56 = 9,459.59/x
  3. Step 3: Cross multiply
    28,178.25x = 42,270.56 × 9,459.59
  4. Step 4: Simplify right side
    28,178.25x = 399,861,943.49
  5. Step 5: Solve for x
    x = 399,861,943.49/28,178.25
  6. Step 6: Final answer
    x = 14,190.45

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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.