Home / 15,368.16-21,199.68-13,375.20

Finding the Fourth Proportional to 15,368.16, 21,199.68 and 13,375.20

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Solution

The fourth proportional to 15,368.16, 21,199.68 and 13,375.20 is: 18,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.16 : 21,199.68 = 13,375.20 : x
  2. Step 2: Convert to fraction form
    15,368.16/21,199.68 = 13,375.20/x
  3. Step 3: Cross multiply
    15,368.16x = 21,199.68 × 13,375.20
  4. Step 4: Simplify right side
    15,368.16x = 283,549,959.94
  5. Step 5: Solve for x
    x = 283,549,959.94/15,368.16
  6. Step 6: Final answer
    x = 18,450.48

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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.