Home / 12,555.02-17,325.14-7,178.02

Finding the Fourth Proportional to 12,555.02, 17,325.14 and 7,178.02

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Solution

The fourth proportional to 12,555.02, 17,325.14 and 7,178.02 is: 9,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.02 : 17,325.14 = 7,178.02 : x
  2. Step 2: Convert to fraction form
    12,555.02/17,325.14 = 7,178.02/x
  3. Step 3: Cross multiply
    12,555.02x = 17,325.14 × 7,178.02
  4. Step 4: Simplify right side
    12,555.02x = 124,360,201.42
  5. Step 5: Solve for x
    x = 124,360,201.42/12,555.02
  6. Step 6: Final answer
    x = 9,905.22

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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.