Home / 28,112.72-38,795.16-15,537.20

Finding the Fourth Proportional to 28,112.72, 38,795.16 and 15,537.20

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Solution

The fourth proportional to 28,112.72, 38,795.16 and 15,537.20 is: 21,441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.72 : 38,795.16 = 15,537.20 : x
  2. Step 2: Convert to fraction form
    28,112.72/38,795.16 = 15,537.20/x
  3. Step 3: Cross multiply
    28,112.72x = 38,795.16 × 15,537.20
  4. Step 4: Simplify right side
    28,112.72x = 602,768,159.95
  5. Step 5: Solve for x
    x = 602,768,159.95/28,112.72
  6. Step 6: Final answer
    x = 21,441.12

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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.