Home / 19,860.24-27,435.60-15,876.12

Finding the Fourth Proportional to 19,860.24, 27,435.60 and 15,876.12

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Solution

The fourth proportional to 19,860.24, 27,435.60 and 15,876.12 is: 21,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.24 : 27,435.60 = 15,876.12 : x
  2. Step 2: Convert to fraction form
    19,860.24/27,435.60 = 15,876.12/x
  3. Step 3: Cross multiply
    19,860.24x = 27,435.60 × 15,876.12
  4. Step 4: Simplify right side
    19,860.24x = 435,570,877.87
  5. Step 5: Solve for x
    x = 435,570,877.87/19,860.24
  6. Step 6: Final answer
    x = 21,931.80

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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.