Home / 21,050.15-31,618.95-16,698.02

Finding the Fourth Proportional to 21,050.15, 31,618.95 and 16,698.02

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Solution

The fourth proportional to 21,050.15, 31,618.95 and 16,698.02 is: 25,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.15 : 31,618.95 = 16,698.02 : x
  2. Step 2: Convert to fraction form
    21,050.15/31,618.95 = 16,698.02/x
  3. Step 3: Cross multiply
    21,050.15x = 31,618.95 × 16,698.02
  4. Step 4: Simplify right side
    21,050.15x = 527,973,701.38
  5. Step 5: Solve for x
    x = 527,973,701.38/21,050.15
  6. Step 6: Final answer
    x = 25,081.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.