Home / 17,915.64-26,887.47-12,407.61

Finding the Fourth Proportional to 17,915.64, 26,887.47 and 12,407.61

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Solution

The fourth proportional to 17,915.64, 26,887.47 and 12,407.61 is: 18,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.64 : 26,887.47 = 12,407.61 : x
  2. Step 2: Convert to fraction form
    17,915.64/26,887.47 = 12,407.61/x
  3. Step 3: Cross multiply
    17,915.64x = 26,887.47 × 12,407.61
  4. Step 4: Simplify right side
    17,915.64x = 333,609,241.65
  5. Step 5: Solve for x
    x = 333,609,241.65/17,915.64
  6. Step 6: Final answer
    x = 18,621.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.