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Finding the Fourth Proportional to 55,312.16, 82,968.13 and 13,759.16

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Solution

The fourth proportional to 55,312.16, 82,968.13 and 13,759.16 is: 20,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,312.16 : 82,968.13 = 13,759.16 : x
  2. Step 2: Convert to fraction form
    55,312.16/82,968.13 = 13,759.16/x
  3. Step 3: Cross multiply
    55,312.16x = 82,968.13 × 13,759.16
  4. Step 4: Simplify right side
    55,312.16x = 1,141,571,377.93
  5. Step 5: Solve for x
    x = 1,141,571,377.93/55,312.16
  6. Step 6: Final answer
    x = 20,638.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.