Home / 19,875.78-27,427.92-11,378.73

Finding the Fourth Proportional to 19,875.78, 27,427.92 and 11,378.73

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Solution

The fourth proportional to 19,875.78, 27,427.92 and 11,378.73 is: 15,702.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.78 : 27,427.92 = 11,378.73 : x
  2. Step 2: Convert to fraction form
    19,875.78/27,427.92 = 11,378.73/x
  3. Step 3: Cross multiply
    19,875.78x = 27,427.92 × 11,378.73
  4. Step 4: Simplify right side
    19,875.78x = 312,094,802.04
  5. Step 5: Solve for x
    x = 312,094,802.04/19,875.78
  6. Step 6: Final answer
    x = 15,702.27

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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.