Home / 28,579.84-42,875.20-10,124.80

Finding the Fourth Proportional to 28,579.84, 42,875.20 and 10,124.80

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Solution

The fourth proportional to 28,579.84, 42,875.20 and 10,124.80 is: 15,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.84 : 42,875.20 = 10,124.80 : x
  2. Step 2: Convert to fraction form
    28,579.84/42,875.20 = 10,124.80/x
  3. Step 3: Cross multiply
    28,579.84x = 42,875.20 × 10,124.80
  4. Step 4: Simplify right side
    28,579.84x = 434,102,824.96
  5. Step 5: Solve for x
    x = 434,102,824.96/28,579.84
  6. Step 6: Final answer
    x = 15,189.13

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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.