Home / 15,411.65-21,268.01-8,338.05

Finding the Fourth Proportional to 15,411.65, 21,268.01 and 8,338.05

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Solution

The fourth proportional to 15,411.65, 21,268.01 and 8,338.05 is: 11,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.65 : 21,268.01 = 8,338.05 : x
  2. Step 2: Convert to fraction form
    15,411.65/21,268.01 = 8,338.05/x
  3. Step 3: Cross multiply
    15,411.65x = 21,268.01 × 8,338.05
  4. Step 4: Simplify right side
    15,411.65x = 177,333,689.09
  5. Step 5: Solve for x
    x = 177,333,689.09/15,411.65
  6. Step 6: Final answer
    x = 11,506.47

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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.