Home / 19,420.31-26,789.51-16,043.15

Finding the Fourth Proportional to 19,420.31, 26,789.51 and 16,043.15

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Solution

The fourth proportional to 19,420.31, 26,789.51 and 16,043.15 is: 22,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.31 : 26,789.51 = 16,043.15 : x
  2. Step 2: Convert to fraction form
    19,420.31/26,789.51 = 16,043.15/x
  3. Step 3: Cross multiply
    19,420.31x = 26,789.51 × 16,043.15
  4. Step 4: Simplify right side
    19,420.31x = 429,788,033.52
  5. Step 5: Solve for x
    x = 429,788,033.52/19,420.31
  6. Step 6: Final answer
    x = 22,130.86

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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.