Home / 28,147.32-38,842.38-15,570.36

Finding the Fourth Proportional to 28,147.32, 38,842.38 and 15,570.36

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Solution

The fourth proportional to 28,147.32, 38,842.38 and 15,570.36 is: 21,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.32 : 38,842.38 = 15,570.36 : x
  2. Step 2: Convert to fraction form
    28,147.32/38,842.38 = 15,570.36/x
  3. Step 3: Cross multiply
    28,147.32x = 38,842.38 × 15,570.36
  4. Step 4: Simplify right side
    28,147.32x = 604,789,839.86
  5. Step 5: Solve for x
    x = 604,789,839.86/28,147.32
  6. Step 6: Final answer
    x = 21,486.59

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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.