Home / 15,585.16-21,508.08-8,511.88

Finding the Fourth Proportional to 15,585.16, 21,508.08 and 8,511.88

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Solution

The fourth proportional to 15,585.16, 21,508.08 and 8,511.88 is: 11,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.16 : 21,508.08 = 8,511.88 : x
  2. Step 2: Convert to fraction form
    15,585.16/21,508.08 = 8,511.88/x
  3. Step 3: Cross multiply
    15,585.16x = 21,508.08 × 8,511.88
  4. Step 4: Simplify right side
    15,585.16x = 183,074,195.99
  5. Step 5: Solve for x
    x = 183,074,195.99/15,585.16
  6. Step 6: Final answer
    x = 11,746.70

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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.