Home / 28,487.46-39,312.03-15,741.72

Finding the Fourth Proportional to 28,487.46, 39,312.03 and 15,741.72

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Solution

The fourth proportional to 28,487.46, 39,312.03 and 15,741.72 is: 21,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.46 : 39,312.03 = 15,741.72 : x
  2. Step 2: Convert to fraction form
    28,487.46/39,312.03 = 15,741.72/x
  3. Step 3: Cross multiply
    28,487.46x = 39,312.03 × 15,741.72
  4. Step 4: Simplify right side
    28,487.46x = 618,838,968.89
  5. Step 5: Solve for x
    x = 618,838,968.89/28,487.46
  6. Step 6: Final answer
    x = 21,723.21

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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.