Home / 19,470.87-26,872.29-12,762.18

Finding the Fourth Proportional to 19,470.87, 26,872.29 and 12,762.18

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Solution

The fourth proportional to 19,470.87, 26,872.29 and 12,762.18 is: 17,613.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,470.87 : 26,872.29 = 12,762.18 : x
  2. Step 2: Convert to fraction form
    19,470.87/26,872.29 = 12,762.18/x
  3. Step 3: Cross multiply
    19,470.87x = 26,872.29 × 12,762.18
  4. Step 4: Simplify right side
    19,470.87x = 342,949,001.99
  5. Step 5: Solve for x
    x = 342,949,001.99/19,470.87
  6. Step 6: Final answer
    x = 17,613.44

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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.