Home / 21,410.93-29,547.12-11,979.50

Finding the Fourth Proportional to 21,410.93, 29,547.12 and 11,979.50

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Solution

The fourth proportional to 21,410.93, 29,547.12 and 11,979.50 is: 16,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,410.93 : 29,547.12 = 11,979.50 : x
  2. Step 2: Convert to fraction form
    21,410.93/29,547.12 = 11,979.50/x
  3. Step 3: Cross multiply
    21,410.93x = 29,547.12 × 11,979.50
  4. Step 4: Simplify right side
    21,410.93x = 353,959,724.04
  5. Step 5: Solve for x
    x = 353,959,724.04/21,410.93
  6. Step 6: Final answer
    x = 16,531.73

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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.