Home / 12,795.02-17,655.87-7,129.55

Finding the Fourth Proportional to 12,795.02, 17,655.87 and 7,129.55

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Solution

The fourth proportional to 12,795.02, 17,655.87 and 7,129.55 is: 9,838.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.02 : 17,655.87 = 7,129.55 : x
  2. Step 2: Convert to fraction form
    12,795.02/17,655.87 = 7,129.55/x
  3. Step 3: Cross multiply
    12,795.02x = 17,655.87 × 7,129.55
  4. Step 4: Simplify right side
    12,795.02x = 125,878,452.10
  5. Step 5: Solve for x
    x = 125,878,452.10/12,795.02
  6. Step 6: Final answer
    x = 9,838.08

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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.