Home / 21,319.43-31,979.56-7,282.67

Finding the Fourth Proportional to 21,319.43, 31,979.56 and 7,282.67

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Solution

The fourth proportional to 21,319.43, 31,979.56 and 7,282.67 is: 10,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.43 : 31,979.56 = 7,282.67 : x
  2. Step 2: Convert to fraction form
    21,319.43/31,979.56 = 7,282.67/x
  3. Step 3: Cross multiply
    21,319.43x = 31,979.56 × 7,282.67
  4. Step 4: Simplify right side
    21,319.43x = 232,896,643.97
  5. Step 5: Solve for x
    x = 232,896,643.97/21,319.43
  6. Step 6: Final answer
    x = 10,924.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.