Home / 13,147.16-18,139.02-7,557.08

Finding the Fourth Proportional to 13,147.16, 18,139.02 and 7,557.08

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Solution

The fourth proportional to 13,147.16, 18,139.02 and 7,557.08 is: 10,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.16 : 18,139.02 = 7,557.08 : x
  2. Step 2: Convert to fraction form
    13,147.16/18,139.02 = 7,557.08/x
  3. Step 3: Cross multiply
    13,147.16x = 18,139.02 × 7,557.08
  4. Step 4: Simplify right side
    13,147.16x = 137,078,025.26
  5. Step 5: Solve for x
    x = 137,078,025.26/13,147.16
  6. Step 6: Final answer
    x = 10,426.44

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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.