Home / 19,031.38-28,547.16-5,180.38

Finding the Fourth Proportional to 19,031.38, 28,547.16 and 5,180.38

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Solution

The fourth proportional to 19,031.38, 28,547.16 and 5,180.38 is: 7,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,031.38 : 28,547.16 = 5,180.38 : x
  2. Step 2: Convert to fraction form
    19,031.38/28,547.16 = 5,180.38/x
  3. Step 3: Cross multiply
    19,031.38x = 28,547.16 × 5,180.38
  4. Step 4: Simplify right side
    19,031.38x = 147,885,136.72
  5. Step 5: Solve for x
    x = 147,885,136.72/19,031.38
  6. Step 6: Final answer
    x = 7,770.59

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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.