Home / 12,928.72-17,840.10-7,263.76

Finding the Fourth Proportional to 12,928.72, 17,840.10 and 7,263.76

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Solution

The fourth proportional to 12,928.72, 17,840.10 and 7,263.76 is: 10,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.72 : 17,840.10 = 7,263.76 : x
  2. Step 2: Convert to fraction form
    12,928.72/17,840.10 = 7,263.76/x
  3. Step 3: Cross multiply
    12,928.72x = 17,840.10 × 7,263.76
  4. Step 4: Simplify right side
    12,928.72x = 129,586,204.78
  5. Step 5: Solve for x
    x = 129,586,204.78/12,928.72
  6. Step 6: Final answer
    x = 10,023.13

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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.