Home / 11,155.02-15,393.96-6,439.29

Finding the Fourth Proportional to 11,155.02, 15,393.96 and 6,439.29

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Solution

The fourth proportional to 11,155.02, 15,393.96 and 6,439.29 is: 8,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.02 : 15,393.96 = 6,439.29 : x
  2. Step 2: Convert to fraction form
    11,155.02/15,393.96 = 6,439.29/x
  3. Step 3: Cross multiply
    11,155.02x = 15,393.96 × 6,439.29
  4. Step 4: Simplify right side
    11,155.02x = 99,126,172.69
  5. Step 5: Solve for x
    x = 99,126,172.69/11,155.02
  6. Step 6: Final answer
    x = 8,886.24

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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.