Home / 21,341.72-31,986.35-15,103.50

Finding the Fourth Proportional to 21,341.72, 31,986.35 and 15,103.50

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Solution

The fourth proportional to 21,341.72, 31,986.35 and 15,103.50 is: 22,636.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.72 : 31,986.35 = 15,103.50 : x
  2. Step 2: Convert to fraction form
    21,341.72/31,986.35 = 15,103.50/x
  3. Step 3: Cross multiply
    21,341.72x = 31,986.35 × 15,103.50
  4. Step 4: Simplify right side
    21,341.72x = 483,105,799.47
  5. Step 5: Solve for x
    x = 483,105,799.47/21,341.72
  6. Step 6: Final answer
    x = 22,636.69

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1.5x scale

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.