Home / 15,585.35-21,507.89-8,511.93

Finding the Fourth Proportional to 15,585.35, 21,507.89 and 8,511.93

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Solution

The fourth proportional to 15,585.35, 21,507.89 and 8,511.93 is: 11,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.35 : 21,507.89 = 8,511.93 : x
  2. Step 2: Convert to fraction form
    15,585.35/21,507.89 = 8,511.93/x
  3. Step 3: Cross multiply
    15,585.35x = 21,507.89 × 8,511.93
  4. Step 4: Simplify right side
    15,585.35x = 183,073,611.57
  5. Step 5: Solve for x
    x = 183,073,611.57/15,585.35
  6. Step 6: Final answer
    x = 11,746.52

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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.