Home / 28,440.74-39,250.70-15,695.12

Finding the Fourth Proportional to 28,440.74, 39,250.70 and 15,695.12

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Solution

The fourth proportional to 28,440.74, 39,250.70 and 15,695.12 is: 21,660.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.74 : 39,250.70 = 15,695.12 : x
  2. Step 2: Convert to fraction form
    28,440.74/39,250.70 = 15,695.12/x
  3. Step 3: Cross multiply
    28,440.74x = 39,250.70 × 15,695.12
  4. Step 4: Simplify right side
    28,440.74x = 616,044,485.82
  5. Step 5: Solve for x
    x = 616,044,485.82/28,440.74
  6. Step 6: Final answer
    x = 21,660.63

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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.