Home / 21,547.72-29,738.68-12,118.10

Finding the Fourth Proportional to 21,547.72, 29,738.68 and 12,118.10

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Solution

The fourth proportional to 21,547.72, 29,738.68 and 12,118.10 is: 16,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.72 : 29,738.68 = 12,118.10 : x
  2. Step 2: Convert to fraction form
    21,547.72/29,738.68 = 12,118.10/x
  3. Step 3: Cross multiply
    21,547.72x = 29,738.68 × 12,118.10
  4. Step 4: Simplify right side
    21,547.72x = 360,376,298.11
  5. Step 5: Solve for x
    x = 360,376,298.11/21,547.72
  6. Step 6: Final answer
    x = 16,724.57

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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.