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Finding the Fourth Proportional to 21,804.13, 32,711.07 and 7,953.13

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Solution

The fourth proportional to 21,804.13, 32,711.07 and 7,953.13 is: 11,931.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.13 : 32,711.07 = 7,953.13 : x
  2. Step 2: Convert to fraction form
    21,804.13/32,711.07 = 7,953.13/x
  3. Step 3: Cross multiply
    21,804.13x = 32,711.07 × 7,953.13
  4. Step 4: Simplify right side
    21,804.13x = 260,155,352.38
  5. Step 5: Solve for x
    x = 260,155,352.38/21,804.13
  6. Step 6: Final answer
    x = 11,931.47

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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.