Home / 27,798.40-38,360.13-15,862.87

Finding the Fourth Proportional to 27,798.40, 38,360.13 and 15,862.87

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Solution

The fourth proportional to 27,798.40, 38,360.13 and 15,862.87 is: 21,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,798.40 : 38,360.13 = 15,862.87 : x
  2. Step 2: Convert to fraction form
    27,798.40/38,360.13 = 15,862.87/x
  3. Step 3: Cross multiply
    27,798.40x = 38,360.13 × 15,862.87
  4. Step 4: Simplify right side
    27,798.40x = 608,501,755.37
  5. Step 5: Solve for x
    x = 608,501,755.37/27,798.40
  6. Step 6: Final answer
    x = 21,889.81

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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.