Home / 28,112.76-38,792.70-15,535.80

Finding the Fourth Proportional to 28,112.76, 38,792.70 and 15,535.80

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Solution

The fourth proportional to 28,112.76, 38,792.70 and 15,535.80 is: 21,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.76 : 38,792.70 = 15,535.80 : x
  2. Step 2: Convert to fraction form
    28,112.76/38,792.70 = 15,535.80/x
  3. Step 3: Cross multiply
    28,112.76x = 38,792.70 × 15,535.80
  4. Step 4: Simplify right side
    28,112.76x = 602,675,628.66
  5. Step 5: Solve for x
    x = 602,675,628.66/28,112.76
  6. Step 6: Final answer
    x = 21,437.80

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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.