Home / 28,151.13-38,848.35-15,404.07

Finding the Fourth Proportional to 28,151.13, 38,848.35 and 15,404.07

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Solution

The fourth proportional to 28,151.13, 38,848.35 and 15,404.07 is: 21,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.13 : 38,848.35 = 15,404.07 : x
  2. Step 2: Convert to fraction form
    28,151.13/38,848.35 = 15,404.07/x
  3. Step 3: Cross multiply
    28,151.13x = 38,848.35 × 15,404.07
  4. Step 4: Simplify right side
    28,151.13x = 598,422,557.10
  5. Step 5: Solve for x
    x = 598,422,557.10/28,151.13
  6. Step 6: Final answer
    x = 21,257.50

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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.