Home / 28,338.40-42,478.24-9,612.16

Finding the Fourth Proportional to 28,338.40, 42,478.24 and 9,612.16

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Solution

The fourth proportional to 28,338.40, 42,478.24 and 9,612.16 is: 14,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.40 : 42,478.24 = 9,612.16 : x
  2. Step 2: Convert to fraction form
    28,338.40/42,478.24 = 9,612.16/x
  3. Step 3: Cross multiply
    28,338.40x = 42,478.24 × 9,612.16
  4. Step 4: Simplify right side
    28,338.40x = 408,307,639.40
  5. Step 5: Solve for x
    x = 408,307,639.40/28,338.40
  6. Step 6: Final answer
    x = 14,408.28

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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.