Home / 28,612.76-39,487.76-18,011.48

Finding the Fourth Proportional to 28,612.76, 39,487.76 and 18,011.48

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Solution

The fourth proportional to 28,612.76, 39,487.76 and 18,011.48 is: 24,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.76 : 39,487.76 = 18,011.48 : x
  2. Step 2: Convert to fraction form
    28,612.76/39,487.76 = 18,011.48/x
  3. Step 3: Cross multiply
    28,612.76x = 39,487.76 × 18,011.48
  4. Step 4: Simplify right side
    28,612.76x = 711,232,999.48
  5. Step 5: Solve for x
    x = 711,232,999.48/28,612.76
  6. Step 6: Final answer
    x = 24,857.20

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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.