Home / 28,010.25-38,654.55-15,435

Finding the Fourth Proportional to 28,010.25, 38,654.55 and 15,435

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Solution

The fourth proportional to 28,010.25, 38,654.55 and 15,435 is: 21,300.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.25 : 38,654.55 = 15,435 : x
  2. Step 2: Convert to fraction form
    28,010.25/38,654.55 = 15,435/x
  3. Step 3: Cross multiply
    28,010.25x = 38,654.55 × 15,435
  4. Step 4: Simplify right side
    28,010.25x = 596,632,979.25
  5. Step 5: Solve for x
    x = 596,632,979.25/28,010.25
  6. Step 6: Final answer
    x = 21,300.52

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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.