Home / 21,410.79-29,547.68-11,979.42

Finding the Fourth Proportional to 21,410.79, 29,547.68 and 11,979.42

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Solution

The fourth proportional to 21,410.79, 29,547.68 and 11,979.42 is: 16,532.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,410.79 : 29,547.68 = 11,979.42 : x
  2. Step 2: Convert to fraction form
    21,410.79/29,547.68 = 11,979.42/x
  3. Step 3: Cross multiply
    21,410.79x = 29,547.68 × 11,979.42
  4. Step 4: Simplify right side
    21,410.79x = 353,964,068.75
  5. Step 5: Solve for x
    x = 353,964,068.75/21,410.79
  6. Step 6: Final answer
    x = 16,532.04

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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.