Home / 19,140.72-28,686.10-9,772.82

Finding the Fourth Proportional to 19,140.72, 28,686.10 and 9,772.82

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Solution

The fourth proportional to 19,140.72, 28,686.10 and 9,772.82 is: 14,646.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.72 : 28,686.10 = 9,772.82 : x
  2. Step 2: Convert to fraction form
    19,140.72/28,686.10 = 9,772.82/x
  3. Step 3: Cross multiply
    19,140.72x = 28,686.10 × 9,772.82
  4. Step 4: Simplify right side
    19,140.72x = 280,343,995.65
  5. Step 5: Solve for x
    x = 280,343,995.65/19,140.72
  6. Step 6: Final answer
    x = 14,646.47

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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.