Home / 15,630.29-21,564.46-8,911.07

Finding the Fourth Proportional to 15,630.29, 21,564.46 and 8,911.07

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Solution

The fourth proportional to 15,630.29, 21,564.46 and 8,911.07 is: 12,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.29 : 21,564.46 = 8,911.07 : x
  2. Step 2: Convert to fraction form
    15,630.29/21,564.46 = 8,911.07/x
  3. Step 3: Cross multiply
    15,630.29x = 21,564.46 × 8,911.07
  4. Step 4: Simplify right side
    15,630.29x = 192,162,412.57
  5. Step 5: Solve for x
    x = 192,162,412.57/15,630.29
  6. Step 6: Final answer
    x = 12,294.23

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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.