Home / 12,431.02-17,157.16-7,956.66

Finding the Fourth Proportional to 12,431.02, 17,157.16 and 7,956.66

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Solution

The fourth proportional to 12,431.02, 17,157.16 and 7,956.66 is: 10,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.02 : 17,157.16 = 7,956.66 : x
  2. Step 2: Convert to fraction form
    12,431.02/17,157.16 = 7,956.66/x
  3. Step 3: Cross multiply
    12,431.02x = 17,157.16 × 7,956.66
  4. Step 4: Simplify right side
    12,431.02x = 136,513,688.69
  5. Step 5: Solve for x
    x = 136,513,688.69/12,431.02
  6. Step 6: Final answer
    x = 10,981.70

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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.