Home / 20,607.45-30,897.51-7,458.12

Finding the Fourth Proportional to 20,607.45, 30,897.51 and 7,458.12

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Solution

The fourth proportional to 20,607.45, 30,897.51 and 7,458.12 is: 11,182.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.45 : 30,897.51 = 7,458.12 : x
  2. Step 2: Convert to fraction form
    20,607.45/30,897.51 = 7,458.12/x
  3. Step 3: Cross multiply
    20,607.45x = 30,897.51 × 7,458.12
  4. Step 4: Simplify right side
    20,607.45x = 230,437,337.28
  5. Step 5: Solve for x
    x = 230,437,337.28/20,607.45
  6. Step 6: Final answer
    x = 11,182.23

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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.