Home / 12,430.24-17,157.34-9,929.76

Finding the Fourth Proportional to 12,430.24, 17,157.34 and 9,929.76

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Solution

The fourth proportional to 12,430.24, 17,157.34 and 9,929.76 is: 13,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.24 : 17,157.34 = 9,929.76 : x
  2. Step 2: Convert to fraction form
    12,430.24/17,157.34 = 9,929.76/x
  3. Step 3: Cross multiply
    12,430.24x = 17,157.34 × 9,929.76
  4. Step 4: Simplify right side
    12,430.24x = 170,368,268.44
  5. Step 5: Solve for x
    x = 170,368,268.44/12,430.24
  6. Step 6: Final answer
    x = 13,705.95

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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.