Home / 20,178.26-30,272.45-7,030.74

Finding the Fourth Proportional to 20,178.26, 30,272.45 and 7,030.74

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Solution

The fourth proportional to 20,178.26, 30,272.45 and 7,030.74 is: 10,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.26 : 30,272.45 = 7,030.74 : x
  2. Step 2: Convert to fraction form
    20,178.26/30,272.45 = 7,030.74/x
  3. Step 3: Cross multiply
    20,178.26x = 30,272.45 × 7,030.74
  4. Step 4: Simplify right side
    20,178.26x = 212,837,689.96
  5. Step 5: Solve for x
    x = 212,837,689.96/20,178.26
  6. Step 6: Final answer
    x = 10,547.87

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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.