Home / 21,411.19-29,547.50-11,851.74

Finding the Fourth Proportional to 21,411.19, 29,547.50 and 11,851.74

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Solution

The fourth proportional to 21,411.19, 29,547.50 and 11,851.74 is: 16,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.19 : 29,547.50 = 11,851.74 : x
  2. Step 2: Convert to fraction form
    21,411.19/29,547.50 = 11,851.74/x
  3. Step 3: Cross multiply
    21,411.19x = 29,547.50 × 11,851.74
  4. Step 4: Simplify right side
    21,411.19x = 350,189,287.65
  5. Step 5: Solve for x
    x = 350,189,287.65/21,411.19
  6. Step 6: Final answer
    x = 16,355.43

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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.