Home / 21,359.24-32,038.67-7,128.79

Finding the Fourth Proportional to 21,359.24, 32,038.67 and 7,128.79

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Solution

The fourth proportional to 21,359.24, 32,038.67 and 7,128.79 is: 10,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.24 : 32,038.67 = 7,128.79 : x
  2. Step 2: Convert to fraction form
    21,359.24/32,038.67 = 7,128.79/x
  3. Step 3: Cross multiply
    21,359.24x = 32,038.67 × 7,128.79
  4. Step 4: Simplify right side
    21,359.24x = 228,396,834.57
  5. Step 5: Solve for x
    x = 228,396,834.57/21,359.24
  6. Step 6: Final answer
    x = 10,693.11

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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.