Home / 12,430.73-17,153.57-7,123.61

Finding the Fourth Proportional to 12,430.73, 17,153.57 and 7,123.61

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Solution

The fourth proportional to 12,430.73, 17,153.57 and 7,123.61 is: 9,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.73 : 17,153.57 = 7,123.61 : x
  2. Step 2: Convert to fraction form
    12,430.73/17,153.57 = 7,123.61/x
  3. Step 3: Cross multiply
    12,430.73x = 17,153.57 × 7,123.61
  4. Step 4: Simplify right side
    12,430.73x = 122,195,403.48
  5. Step 5: Solve for x
    x = 122,195,403.48/12,430.73
  6. Step 6: Final answer
    x = 9,830.10

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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.