Home / 20,426.56-30,642.72-7,275.04

Finding the Fourth Proportional to 20,426.56, 30,642.72 and 7,275.04

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Solution

The fourth proportional to 20,426.56, 30,642.72 and 7,275.04 is: 10,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.56 : 30,642.72 = 7,275.04 : x
  2. Step 2: Convert to fraction form
    20,426.56/30,642.72 = 7,275.04/x
  3. Step 3: Cross multiply
    20,426.56x = 30,642.72 × 7,275.04
  4. Step 4: Simplify right side
    20,426.56x = 222,927,013.71
  5. Step 5: Solve for x
    x = 222,927,013.71/20,426.56
  6. Step 6: Final answer
    x = 10,913.59

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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.