Home / 28,020.16-38,667.36-15,446.08

Finding the Fourth Proportional to 28,020.16, 38,667.36 and 15,446.08

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Solution

The fourth proportional to 28,020.16, 38,667.36 and 15,446.08 is: 21,315.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.16 : 38,667.36 = 15,446.08 : x
  2. Step 2: Convert to fraction form
    28,020.16/38,667.36 = 15,446.08/x
  3. Step 3: Cross multiply
    28,020.16x = 38,667.36 × 15,446.08
  4. Step 4: Simplify right side
    28,020.16x = 597,259,135.95
  5. Step 5: Solve for x
    x = 597,259,135.95/28,020.16
  6. Step 6: Final answer
    x = 21,315.34

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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.