Home / 21,150.57-31,720.18-6,356.19

Finding the Fourth Proportional to 21,150.57, 31,720.18 and 6,356.19

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Solution

The fourth proportional to 21,150.57, 31,720.18 and 6,356.19 is: 9,532.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.57 : 31,720.18 = 6,356.19 : x
  2. Step 2: Convert to fraction form
    21,150.57/31,720.18 = 6,356.19/x
  3. Step 3: Cross multiply
    21,150.57x = 31,720.18 × 6,356.19
  4. Step 4: Simplify right side
    21,150.57x = 201,619,490.91
  5. Step 5: Solve for x
    x = 201,619,490.91/21,150.57
  6. Step 6: Final answer
    x = 9,532.58

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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.