Home / 21,785.28-30,070.08-13,833.60

Finding the Fourth Proportional to 21,785.28, 30,070.08 and 13,833.60

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Solution

The fourth proportional to 21,785.28, 30,070.08 and 13,833.60 is: 19,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.28 : 30,070.08 = 13,833.60 : x
  2. Step 2: Convert to fraction form
    21,785.28/30,070.08 = 13,833.60/x
  3. Step 3: Cross multiply
    21,785.28x = 30,070.08 × 13,833.60
  4. Step 4: Simplify right side
    21,785.28x = 415,977,458.69
  5. Step 5: Solve for x
    x = 415,977,458.69/21,785.28
  6. Step 6: Final answer
    x = 19,094.43

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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.