Home / 21,547.16-29,734.94-12,115.80

Finding the Fourth Proportional to 21,547.16, 29,734.94 and 12,115.80

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Solution

The fourth proportional to 21,547.16, 29,734.94 and 12,115.80 is: 16,719.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.16 : 29,734.94 = 12,115.80 : x
  2. Step 2: Convert to fraction form
    21,547.16/29,734.94 = 12,115.80/x
  3. Step 3: Cross multiply
    21,547.16x = 29,734.94 × 12,115.80
  4. Step 4: Simplify right side
    21,547.16x = 360,262,586.05
  5. Step 5: Solve for x
    x = 360,262,586.05/21,547.16
  6. Step 6: Final answer
    x = 16,719.72

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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.