Home / 28,648.48-39,532.80-15,902.40

Finding the Fourth Proportional to 28,648.48, 39,532.80 and 15,902.40

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Solution

The fourth proportional to 28,648.48, 39,532.80 and 15,902.40 is: 21,944.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.48 : 39,532.80 = 15,902.40 : x
  2. Step 2: Convert to fraction form
    28,648.48/39,532.80 = 15,902.40/x
  3. Step 3: Cross multiply
    28,648.48x = 39,532.80 × 15,902.40
  4. Step 4: Simplify right side
    28,648.48x = 628,666,398.72
  5. Step 5: Solve for x
    x = 628,666,398.72/28,648.48
  6. Step 6: Final answer
    x = 21,944.14

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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.