Home / 19,868.47-27,418.37-10,915.76

Finding the Fourth Proportional to 19,868.47, 27,418.37 and 10,915.76

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Solution

The fourth proportional to 19,868.47, 27,418.37 and 10,915.76 is: 15,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.47 : 27,418.37 = 10,915.76 : x
  2. Step 2: Convert to fraction form
    19,868.47/27,418.37 = 10,915.76/x
  3. Step 3: Cross multiply
    19,868.47x = 27,418.37 × 10,915.76
  4. Step 4: Simplify right side
    19,868.47x = 299,292,360.48
  5. Step 5: Solve for x
    x = 299,292,360.48/19,868.47
  6. Step 6: Final answer
    x = 15,063.69

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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.