Home / 28,012.67-38,657.49-15,265.86

Finding the Fourth Proportional to 28,012.67, 38,657.49 and 15,265.86

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Solution

The fourth proportional to 28,012.67, 38,657.49 and 15,265.86 is: 21,066.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.67 : 38,657.49 = 15,265.86 : x
  2. Step 2: Convert to fraction form
    28,012.67/38,657.49 = 15,265.86/x
  3. Step 3: Cross multiply
    28,012.67x = 38,657.49 × 15,265.86
  4. Step 4: Simplify right side
    28,012.67x = 590,139,781.35
  5. Step 5: Solve for x
    x = 590,139,781.35/28,012.67
  6. Step 6: Final answer
    x = 21,066.89

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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.