Home / 28,110.64-38,792.16-15,535.12

Finding the Fourth Proportional to 28,110.64, 38,792.16 and 15,535.12

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Solution

The fourth proportional to 28,110.64, 38,792.16 and 15,535.12 is: 21,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.64 : 38,792.16 = 15,535.12 : x
  2. Step 2: Convert to fraction form
    28,110.64/38,792.16 = 15,535.12/x
  3. Step 3: Cross multiply
    28,110.64x = 38,792.16 × 15,535.12
  4. Step 4: Simplify right side
    28,110.64x = 602,640,860.66
  5. Step 5: Solve for x
    x = 602,640,860.66/28,110.64
  6. Step 6: Final answer
    x = 21,438.18

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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.