Home / 15,347.93-21,151.19-13,447.13

Finding the Fourth Proportional to 15,347.93, 21,151.19 and 13,447.13

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Solution

The fourth proportional to 15,347.93, 21,151.19 and 13,447.13 is: 18,531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.93 : 21,151.19 = 13,447.13 : x
  2. Step 2: Convert to fraction form
    15,347.93/21,151.19 = 13,447.13/x
  3. Step 3: Cross multiply
    15,347.93x = 21,151.19 × 13,447.13
  4. Step 4: Simplify right side
    15,347.93x = 284,422,729.45
  5. Step 5: Solve for x
    x = 284,422,729.45/15,347.93
  6. Step 6: Final answer
    x = 18,531.67

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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.