Home / 28,114.41-38,799.48-15,368.78

Finding the Fourth Proportional to 28,114.41, 38,799.48 and 15,368.78

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Solution

The fourth proportional to 28,114.41, 38,799.48 and 15,368.78 is: 21,209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.41 : 38,799.48 = 15,368.78 : x
  2. Step 2: Convert to fraction form
    28,114.41/38,799.48 = 15,368.78/x
  3. Step 3: Cross multiply
    28,114.41x = 38,799.48 × 15,368.78
  4. Step 4: Simplify right side
    28,114.41x = 596,300,478.24
  5. Step 5: Solve for x
    x = 596,300,478.24/28,114.41
  6. Step 6: Final answer
    x = 21,209.78

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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.