Home / 21,065.85-31,598.78-5,483.48

Finding the Fourth Proportional to 21,065.85, 31,598.78 and 5,483.48

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Solution

The fourth proportional to 21,065.85, 31,598.78 and 5,483.48 is: 8,225.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.85 : 31,598.78 = 5,483.48 : x
  2. Step 2: Convert to fraction form
    21,065.85/31,598.78 = 5,483.48/x
  3. Step 3: Cross multiply
    21,065.85x = 31,598.78 × 5,483.48
  4. Step 4: Simplify right side
    21,065.85x = 173,271,092.74
  5. Step 5: Solve for x
    x = 173,271,092.74/21,065.85
  6. Step 6: Final answer
    x = 8,225.21

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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.