Home / 18,938.16-28,368.36-15,220.26

Finding the Fourth Proportional to 18,938.16, 28,368.36 and 15,220.26

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Solution

The fourth proportional to 18,938.16, 28,368.36 and 15,220.26 is: 22,799.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.16 : 28,368.36 = 15,220.26 : x
  2. Step 2: Convert to fraction form
    18,938.16/28,368.36 = 15,220.26/x
  3. Step 3: Cross multiply
    18,938.16x = 28,368.36 × 15,220.26
  4. Step 4: Simplify right side
    18,938.16x = 431,773,814.97
  5. Step 5: Solve for x
    x = 431,773,814.97/18,938.16
  6. Step 6: Final answer
    x = 22,799.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.