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Finding the Fourth Proportional to 21,904.70, 32,854.01 and 7,113.69

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Solution

The fourth proportional to 21,904.70, 32,854.01 and 7,113.69 is: 10,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.70 : 32,854.01 = 7,113.69 : x
  2. Step 2: Convert to fraction form
    21,904.70/32,854.01 = 7,113.69/x
  3. Step 3: Cross multiply
    21,904.70x = 32,854.01 × 7,113.69
  4. Step 4: Simplify right side
    21,904.70x = 233,713,206.83
  5. Step 5: Solve for x
    x = 233,713,206.83/21,904.70
  6. Step 6: Final answer
    x = 10,669.55

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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.