Home / 11,439.02-15,781.20-6,959.18

Finding the Fourth Proportional to 11,439.02, 15,781.20 and 6,959.18

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Solution

The fourth proportional to 11,439.02, 15,781.20 and 6,959.18 is: 9,600.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.02 : 15,781.20 = 6,959.18 : x
  2. Step 2: Convert to fraction form
    11,439.02/15,781.20 = 6,959.18/x
  3. Step 3: Cross multiply
    11,439.02x = 15,781.20 × 6,959.18
  4. Step 4: Simplify right side
    11,439.02x = 109,824,132.51
  5. Step 5: Solve for x
    x = 109,824,132.51/11,439.02
  6. Step 6: Final answer
    x = 9,600.84

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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.