Home / 28,487.16-42,730.20-7,425.54

Finding the Fourth Proportional to 28,487.16, 42,730.20 and 7,425.54

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Solution

The fourth proportional to 28,487.16, 42,730.20 and 7,425.54 is: 11,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.16 : 42,730.20 = 7,425.54 : x
  2. Step 2: Convert to fraction form
    28,487.16/42,730.20 = 7,425.54/x
  3. Step 3: Cross multiply
    28,487.16x = 42,730.20 × 7,425.54
  4. Step 4: Simplify right side
    28,487.16x = 317,294,809.31
  5. Step 5: Solve for x
    x = 317,294,809.31/28,487.16
  6. Step 6: Final answer
    x = 11,138.17

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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.