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Finding the Fourth Proportional to 26,689.32, 40,038.84 and 8,918.29

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Solution

The fourth proportional to 26,689.32, 40,038.84 and 8,918.29 is: 13,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,689.32 : 40,038.84 = 8,918.29 : x
  2. Step 2: Convert to fraction form
    26,689.32/40,038.84 = 8,918.29/x
  3. Step 3: Cross multiply
    26,689.32x = 40,038.84 × 8,918.29
  4. Step 4: Simplify right side
    26,689.32x = 357,077,986.38
  5. Step 5: Solve for x
    x = 357,077,986.38/26,689.32
  6. Step 6: Final answer
    x = 13,379.06

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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.