Home / 27,785.57-38,342.70-15,848.46

Finding the Fourth Proportional to 27,785.57, 38,342.70 and 15,848.46

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Solution

The fourth proportional to 27,785.57, 38,342.70 and 15,848.46 is: 21,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.57 : 38,342.70 = 15,848.46 : x
  2. Step 2: Convert to fraction form
    27,785.57/38,342.70 = 15,848.46/x
  3. Step 3: Cross multiply
    27,785.57x = 38,342.70 × 15,848.46
  4. Step 4: Simplify right side
    27,785.57x = 607,672,747.24
  5. Step 5: Solve for x
    x = 607,672,747.24/27,785.57
  6. Step 6: Final answer
    x = 21,870.09

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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.