Home / 28,249.28-42,376.80-9,776.96

Finding the Fourth Proportional to 28,249.28, 42,376.80 and 9,776.96

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Solution

The fourth proportional to 28,249.28, 42,376.80 and 9,776.96 is: 14,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.28 : 42,376.80 = 9,776.96 : x
  2. Step 2: Convert to fraction form
    28,249.28/42,376.80 = 9,776.96/x
  3. Step 3: Cross multiply
    28,249.28x = 42,376.80 × 9,776.96
  4. Step 4: Simplify right side
    28,249.28x = 414,316,278.53
  5. Step 5: Solve for x
    x = 414,316,278.53/28,249.28
  6. Step 6: Final answer
    x = 14,666.44

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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.