Home / 12,690.47-19,042.59-5,295.57

Finding the Fourth Proportional to 12,690.47, 19,042.59 and 5,295.57

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Solution

The fourth proportional to 12,690.47, 19,042.59 and 5,295.57 is: 7,946.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.47 : 19,042.59 = 5,295.57 : x
  2. Step 2: Convert to fraction form
    12,690.47/19,042.59 = 5,295.57/x
  3. Step 3: Cross multiply
    12,690.47x = 19,042.59 × 5,295.57
  4. Step 4: Simplify right side
    12,690.47x = 100,841,341.85
  5. Step 5: Solve for x
    x = 100,841,341.85/12,690.47
  6. Step 6: Final answer
    x = 7,946.23

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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.