Home / 12,818.93-17,690.29-7,442.63

Finding the Fourth Proportional to 12,818.93, 17,690.29 and 7,442.63

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Solution

The fourth proportional to 12,818.93, 17,690.29 and 7,442.63 is: 10,270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.93 : 17,690.29 = 7,442.63 : x
  2. Step 2: Convert to fraction form
    12,818.93/17,690.29 = 7,442.63/x
  3. Step 3: Cross multiply
    12,818.93x = 17,690.29 × 7,442.63
  4. Step 4: Simplify right side
    12,818.93x = 131,662,194.61
  5. Step 5: Solve for x
    x = 131,662,194.61/12,818.93
  6. Step 6: Final answer
    x = 10,270.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.