Home / 26,686.41-40,030.31-12,643.15

Finding the Fourth Proportional to 26,686.41, 40,030.31 and 12,643.15

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Solution

The fourth proportional to 26,686.41, 40,030.31 and 12,643.15 is: 18,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.41 : 40,030.31 = 12,643.15 : x
  2. Step 2: Convert to fraction form
    26,686.41/40,030.31 = 12,643.15/x
  3. Step 3: Cross multiply
    26,686.41x = 40,030.31 × 12,643.15
  4. Step 4: Simplify right side
    26,686.41x = 506,109,213.88
  5. Step 5: Solve for x
    x = 506,109,213.88/26,686.41
  6. Step 6: Final answer
    x = 18,965.05

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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.