Home / 21,307.61-31,945.66-7,263.92

Finding the Fourth Proportional to 21,307.61, 31,945.66 and 7,263.92

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Solution

The fourth proportional to 21,307.61, 31,945.66 and 7,263.92 is: 10,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.61 : 31,945.66 = 7,263.92 : x
  2. Step 2: Convert to fraction form
    21,307.61/31,945.66 = 7,263.92/x
  3. Step 3: Cross multiply
    21,307.61x = 31,945.66 × 7,263.92
  4. Step 4: Simplify right side
    21,307.61x = 232,050,718.59
  5. Step 5: Solve for x
    x = 232,050,718.59/21,307.61
  6. Step 6: Final answer
    x = 10,890.51

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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.