Home / 21,430.24-32,150.64-6,639.52

Finding the Fourth Proportional to 21,430.24, 32,150.64 and 6,639.52

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Solution

The fourth proportional to 21,430.24, 32,150.64 and 6,639.52 is: 9,960.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.24 : 32,150.64 = 6,639.52 : x
  2. Step 2: Convert to fraction form
    21,430.24/32,150.64 = 6,639.52/x
  3. Step 3: Cross multiply
    21,430.24x = 32,150.64 × 6,639.52
  4. Step 4: Simplify right side
    21,430.24x = 213,464,817.29
  5. Step 5: Solve for x
    x = 213,464,817.29/21,430.24
  6. Step 6: Final answer
    x = 9,960.92

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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.