Home / 28,111.56-38,792.43-15,535.50

Finding the Fourth Proportional to 28,111.56, 38,792.43 and 15,535.50

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Solution

The fourth proportional to 28,111.56, 38,792.43 and 15,535.50 is: 21,438.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.56 : 38,792.43 = 15,535.50 : x
  2. Step 2: Convert to fraction form
    28,111.56/38,792.43 = 15,535.50/x
  3. Step 3: Cross multiply
    28,111.56x = 38,792.43 × 15,535.50
  4. Step 4: Simplify right side
    28,111.56x = 602,659,796.27
  5. Step 5: Solve for x
    x = 602,659,796.27/28,111.56
  6. Step 6: Final answer
    x = 21,438.15

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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.