Home / 15,392.71-21,231.83-10,612.86

Finding the Fourth Proportional to 15,392.71, 21,231.83 and 10,612.86

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Solution

The fourth proportional to 15,392.71, 21,231.83 and 10,612.86 is: 14,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,392.71 : 21,231.83 = 10,612.86 : x
  2. Step 2: Convert to fraction form
    15,392.71/21,231.83 = 10,612.86/x
  3. Step 3: Cross multiply
    15,392.71x = 21,231.83 × 10,612.86
  4. Step 4: Simplify right side
    15,392.71x = 225,330,306.65
  5. Step 5: Solve for x
    x = 225,330,306.65/15,392.71
  6. Step 6: Final answer
    x = 14,638.77

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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.