Home / 19,271.38-28,907.08-5,420.38

Finding the Fourth Proportional to 19,271.38, 28,907.08 and 5,420.38

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Solution

The fourth proportional to 19,271.38, 28,907.08 and 5,420.38 is: 8,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.38 : 28,907.08 = 5,420.38 : x
  2. Step 2: Convert to fraction form
    19,271.38/28,907.08 = 5,420.38/x
  3. Step 3: Cross multiply
    19,271.38x = 28,907.08 × 5,420.38
  4. Step 4: Simplify right side
    19,271.38x = 156,687,358.29
  5. Step 5: Solve for x
    x = 156,687,358.29/19,271.38
  6. Step 6: Final answer
    x = 8,130.57

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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.