Home / 13,316.78-18,393.51-9,974.53

Finding the Fourth Proportional to 13,316.78, 18,393.51 and 9,974.53

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Solution

The fourth proportional to 13,316.78, 18,393.51 and 9,974.53 is: 13,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.78 : 18,393.51 = 9,974.53 : x
  2. Step 2: Convert to fraction form
    13,316.78/18,393.51 = 9,974.53/x
  3. Step 3: Cross multiply
    13,316.78x = 18,393.51 × 9,974.53
  4. Step 4: Simplify right side
    13,316.78x = 183,466,617.30
  5. Step 5: Solve for x
    x = 183,466,617.30/13,316.78
  6. Step 6: Final answer
    x = 13,777.10

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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.