Home / 28,108.40-38,792.16-15,535.64

Finding the Fourth Proportional to 28,108.40, 38,792.16 and 15,535.64

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Solution

The fourth proportional to 28,108.40, 38,792.16 and 15,535.64 is: 21,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.40 : 38,792.16 = 15,535.64 : x
  2. Step 2: Convert to fraction form
    28,108.40/38,792.16 = 15,535.64/x
  3. Step 3: Cross multiply
    28,108.40x = 38,792.16 × 15,535.64
  4. Step 4: Simplify right side
    28,108.40x = 602,661,032.58
  5. Step 5: Solve for x
    x = 602,661,032.58/28,108.40
  6. Step 6: Final answer
    x = 21,440.60

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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.