Home / 28,017.67-38,664.40-15,270.86

Finding the Fourth Proportional to 28,017.67, 38,664.40 and 15,270.86

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Solution

The fourth proportional to 28,017.67, 38,664.40 and 15,270.86 is: 21,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.67 : 38,664.40 = 15,270.86 : x
  2. Step 2: Convert to fraction form
    28,017.67/38,664.40 = 15,270.86/x
  3. Step 3: Cross multiply
    28,017.67x = 38,664.40 × 15,270.86
  4. Step 4: Simplify right side
    28,017.67x = 590,438,639.38
  5. Step 5: Solve for x
    x = 590,438,639.38/28,017.67
  6. Step 6: Final answer
    x = 21,073.80

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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.