Home / 15,585.12-21,507.84-8,511.48

Finding the Fourth Proportional to 15,585.12, 21,507.84 and 8,511.48

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Solution

The fourth proportional to 15,585.12, 21,507.84 and 8,511.48 is: 11,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.12 : 21,507.84 = 8,511.48 : x
  2. Step 2: Convert to fraction form
    15,585.12/21,507.84 = 8,511.48/x
  3. Step 3: Cross multiply
    15,585.12x = 21,507.84 × 8,511.48
  4. Step 4: Simplify right side
    15,585.12x = 183,063,550.00
  5. Step 5: Solve for x
    x = 183,063,550.00/15,585.12
  6. Step 6: Final answer
    x = 11,746.05

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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.