Home / 15,864.72-21,890.41-10,197.55

Finding the Fourth Proportional to 15,864.72, 21,890.41 and 10,197.55

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Solution

The fourth proportional to 15,864.72, 21,890.41 and 10,197.55 is: 14,070.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.72 : 21,890.41 = 10,197.55 : x
  2. Step 2: Convert to fraction form
    15,864.72/21,890.41 = 10,197.55/x
  3. Step 3: Cross multiply
    15,864.72x = 21,890.41 × 10,197.55
  4. Step 4: Simplify right side
    15,864.72x = 223,228,550.50
  5. Step 5: Solve for x
    x = 223,228,550.50/15,864.72
  6. Step 6: Final answer
    x = 14,070.75

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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.