Home / 28,100.95-38,787.39-18,547.81

Finding the Fourth Proportional to 28,100.95, 38,787.39 and 18,547.81

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Solution

The fourth proportional to 28,100.95, 38,787.39 and 18,547.81 is: 25,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.95 : 38,787.39 = 18,547.81 : x
  2. Step 2: Convert to fraction form
    28,100.95/38,787.39 = 18,547.81/x
  3. Step 3: Cross multiply
    28,100.95x = 38,787.39 × 18,547.81
  4. Step 4: Simplify right side
    28,100.95x = 719,420,853.44
  5. Step 5: Solve for x
    x = 719,420,853.44/28,100.95
  6. Step 6: Final answer
    x = 25,601.30

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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.