Home / 21,200.16-31,800.75-6,409.02

Finding the Fourth Proportional to 21,200.16, 31,800.75 and 6,409.02

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Solution

The fourth proportional to 21,200.16, 31,800.75 and 6,409.02 is: 9,613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.16 : 31,800.75 = 6,409.02 : x
  2. Step 2: Convert to fraction form
    21,200.16/31,800.75 = 6,409.02/x
  3. Step 3: Cross multiply
    21,200.16x = 31,800.75 × 6,409.02
  4. Step 4: Simplify right side
    21,200.16x = 203,811,642.77
  5. Step 5: Solve for x
    x = 203,811,642.77/21,200.16
  6. Step 6: Final answer
    x = 9,613.68

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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.