Home / 26,915.65-37,143.32-14,978.78

Finding the Fourth Proportional to 26,915.65, 37,143.32 and 14,978.78

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Solution

The fourth proportional to 26,915.65, 37,143.32 and 14,978.78 is: 20,670.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,915.65 : 37,143.32 = 14,978.78 : x
  2. Step 2: Convert to fraction form
    26,915.65/37,143.32 = 14,978.78/x
  3. Step 3: Cross multiply
    26,915.65x = 37,143.32 × 14,978.78
  4. Step 4: Simplify right side
    26,915.65x = 556,361,618.75
  5. Step 5: Solve for x
    x = 556,361,618.75/26,915.65
  6. Step 6: Final answer
    x = 20,670.56

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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.