Home / 15,585.80-21,508.07-8,512.25

Finding the Fourth Proportional to 15,585.80, 21,508.07 and 8,512.25

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Solution

The fourth proportional to 15,585.80, 21,508.07 and 8,512.25 is: 11,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.80 : 21,508.07 = 8,512.25 : x
  2. Step 2: Convert to fraction form
    15,585.80/21,508.07 = 8,512.25/x
  3. Step 3: Cross multiply
    15,585.80x = 21,508.07 × 8,512.25
  4. Step 4: Simplify right side
    15,585.80x = 183,081,918.76
  5. Step 5: Solve for x
    x = 183,081,918.76/15,585.80
  6. Step 6: Final answer
    x = 11,746.72

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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.