Home / 13,291.02-18,359.12-9,928

Finding the Fourth Proportional to 13,291.02, 18,359.12 and 9,928

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Solution

The fourth proportional to 13,291.02, 18,359.12 and 9,928 is: 13,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.02 : 18,359.12 = 9,928 : x
  2. Step 2: Convert to fraction form
    13,291.02/18,359.12 = 9,928/x
  3. Step 3: Cross multiply
    13,291.02x = 18,359.12 × 9,928
  4. Step 4: Simplify right side
    13,291.02x = 182,269,343.36
  5. Step 5: Solve for x
    x = 182,269,343.36/13,291.02
  6. Step 6: Final answer
    x = 13,713.72

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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.