Home / 14,217.50-19,620.15-7,929.74

Finding the Fourth Proportional to 14,217.50, 19,620.15 and 7,929.74

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Solution

The fourth proportional to 14,217.50, 19,620.15 and 7,929.74 is: 10,943.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.50 : 19,620.15 = 7,929.74 : x
  2. Step 2: Convert to fraction form
    14,217.50/19,620.15 = 7,929.74/x
  3. Step 3: Cross multiply
    14,217.50x = 19,620.15 × 7,929.74
  4. Step 4: Simplify right side
    14,217.50x = 155,582,688.26
  5. Step 5: Solve for x
    x = 155,582,688.26/14,217.50
  6. Step 6: Final answer
    x = 10,943.04

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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.