Home / 28,078.56-38,748.08-15,503.04

Finding the Fourth Proportional to 28,078.56, 38,748.08 and 15,503.04

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Solution

The fourth proportional to 28,078.56, 38,748.08 and 15,503.04 is: 21,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.56 : 38,748.08 = 15,503.04 : x
  2. Step 2: Convert to fraction form
    28,078.56/38,748.08 = 15,503.04/x
  3. Step 3: Cross multiply
    28,078.56x = 38,748.08 × 15,503.04
  4. Step 4: Simplify right side
    28,078.56x = 600,713,034.16
  5. Step 5: Solve for x
    x = 600,713,034.16/28,078.56
  6. Step 6: Final answer
    x = 21,394.01

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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.