Home / 15,641.04-21,584.52-8,470.79

Finding the Fourth Proportional to 15,641.04, 21,584.52 and 8,470.79

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Solution

The fourth proportional to 15,641.04, 21,584.52 and 8,470.79 is: 11,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,641.04 : 21,584.52 = 8,470.79 : x
  2. Step 2: Convert to fraction form
    15,641.04/21,584.52 = 8,470.79/x
  3. Step 3: Cross multiply
    15,641.04x = 21,584.52 × 8,470.79
  4. Step 4: Simplify right side
    15,641.04x = 182,837,828.25
  5. Step 5: Solve for x
    x = 182,837,828.25/15,641.04
  6. Step 6: Final answer
    x = 11,689.62

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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.