Home / 26,787.85-40,116.16-18,870.91

Finding the Fourth Proportional to 26,787.85, 40,116.16 and 18,870.91

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Solution

The fourth proportional to 26,787.85, 40,116.16 and 18,870.91 is: 28,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,787.85 : 40,116.16 = 18,870.91 : x
  2. Step 2: Convert to fraction form
    26,787.85/40,116.16 = 18,870.91/x
  3. Step 3: Cross multiply
    26,787.85x = 40,116.16 × 18,870.91
  4. Step 4: Simplify right side
    26,787.85x = 757,028,444.91
  5. Step 5: Solve for x
    x = 757,028,444.91/26,787.85
  6. Step 6: Final answer
    x = 28,260.14

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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.