Home / 12,585.18-17,365.60-7,280.49

Finding the Fourth Proportional to 12,585.18, 17,365.60 and 7,280.49

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Solution

The fourth proportional to 12,585.18, 17,365.60 and 7,280.49 is: 10,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.18 : 17,365.60 = 7,280.49 : x
  2. Step 2: Convert to fraction form
    12,585.18/17,365.60 = 7,280.49/x
  3. Step 3: Cross multiply
    12,585.18x = 17,365.60 × 7,280.49
  4. Step 4: Simplify right side
    12,585.18x = 126,430,077.14
  5. Step 5: Solve for x
    x = 126,430,077.14/12,585.18
  6. Step 6: Final answer
    x = 10,045.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.