Home / 21,240.30-31,860.24-5,657.93

Finding the Fourth Proportional to 21,240.30, 31,860.24 and 5,657.93

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Solution

The fourth proportional to 21,240.30, 31,860.24 and 5,657.93 is: 8,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.30 : 31,860.24 = 5,657.93 : x
  2. Step 2: Convert to fraction form
    21,240.30/31,860.24 = 5,657.93/x
  3. Step 3: Cross multiply
    21,240.30x = 31,860.24 × 5,657.93
  4. Step 4: Simplify right side
    21,240.30x = 180,263,007.70
  5. Step 5: Solve for x
    x = 180,263,007.70/21,240.30
  6. Step 6: Final answer
    x = 8,486.84

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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.