Home / 15,780.32-21,769.04-10,326.16

Finding the Fourth Proportional to 15,780.32, 21,769.04 and 10,326.16

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Solution

The fourth proportional to 15,780.32, 21,769.04 and 10,326.16 is: 14,245.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.32 : 21,769.04 = 10,326.16 : x
  2. Step 2: Convert to fraction form
    15,780.32/21,769.04 = 10,326.16/x
  3. Step 3: Cross multiply
    15,780.32x = 21,769.04 × 10,326.16
  4. Step 4: Simplify right side
    15,780.32x = 224,790,590.09
  5. Step 5: Solve for x
    x = 224,790,590.09/15,780.32
  6. Step 6: Final answer
    x = 14,245.00

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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.