Home / 21,547.01-29,733.78-12,115.58

Finding the Fourth Proportional to 21,547.01, 29,733.78 and 12,115.58

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Solution

The fourth proportional to 21,547.01, 29,733.78 and 12,115.58 is: 16,718.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.01 : 29,733.78 = 12,115.58 : x
  2. Step 2: Convert to fraction form
    21,547.01/29,733.78 = 12,115.58/x
  3. Step 3: Cross multiply
    21,547.01x = 29,733.78 × 12,115.58
  4. Step 4: Simplify right side
    21,547.01x = 360,241,887.06
  5. Step 5: Solve for x
    x = 360,241,887.06/21,547.01
  6. Step 6: Final answer
    x = 16,718.88

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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.