Home / 27,915.64-38,525.29-15,978.69

Finding the Fourth Proportional to 27,915.64, 38,525.29 and 15,978.69

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Solution

The fourth proportional to 27,915.64, 38,525.29 and 15,978.69 is: 22,051.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.64 : 38,525.29 = 15,978.69 : x
  2. Step 2: Convert to fraction form
    27,915.64/38,525.29 = 15,978.69/x
  3. Step 3: Cross multiply
    27,915.64x = 38,525.29 × 15,978.69
  4. Step 4: Simplify right side
    27,915.64x = 615,583,626.12
  5. Step 5: Solve for x
    x = 615,583,626.12/27,915.64
  6. Step 6: Final answer
    x = 22,051.57

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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.