Home / 15,367.68-21,211.56-14,438.40

Finding the Fourth Proportional to 15,367.68, 21,211.56 and 14,438.40

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Solution

The fourth proportional to 15,367.68, 21,211.56 and 14,438.40 is: 19,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.68 : 21,211.56 = 14,438.40 : x
  2. Step 2: Convert to fraction form
    15,367.68/21,211.56 = 14,438.40/x
  3. Step 3: Cross multiply
    15,367.68x = 21,211.56 × 14,438.40
  4. Step 4: Simplify right side
    15,367.68x = 306,260,987.90
  5. Step 5: Solve for x
    x = 306,260,987.90/15,367.68
  6. Step 6: Final answer
    x = 19,928.90

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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.