Home / 20,538.24-30,807.36-7,390.32

Finding the Fourth Proportional to 20,538.24, 30,807.36 and 7,390.32

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Solution

The fourth proportional to 20,538.24, 30,807.36 and 7,390.32 is: 11,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.24 : 30,807.36 = 7,390.32 : x
  2. Step 2: Convert to fraction form
    20,538.24/30,807.36 = 7,390.32/x
  3. Step 3: Cross multiply
    20,538.24x = 30,807.36 × 7,390.32
  4. Step 4: Simplify right side
    20,538.24x = 227,676,248.76
  5. Step 5: Solve for x
    x = 227,676,248.76/20,538.24
  6. Step 6: Final answer
    x = 11,085.48

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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.