Home / 38,319.10-52,879-21,322.78

Finding the Fourth Proportional to 38,319.10, 52,879 and 21,322.78

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Solution

The fourth proportional to 38,319.10, 52,879 and 21,322.78 is: 29,424.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,319.10 : 52,879 = 21,322.78 : x
  2. Step 2: Convert to fraction form
    38,319.10/52,879 = 21,322.78/x
  3. Step 3: Cross multiply
    38,319.10x = 52,879 × 21,322.78
  4. Step 4: Simplify right side
    38,319.10x = 1,127,527,283.62
  5. Step 5: Solve for x
    x = 1,127,527,283.62/38,319.10
  6. Step 6: Final answer
    x = 29,424.68

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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.