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Finding the Fourth Proportional to 21,354.63, 32,030.97 and 7,315.92

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Solution

The fourth proportional to 21,354.63, 32,030.97 and 7,315.92 is: 10,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.63 : 32,030.97 = 7,315.92 : x
  2. Step 2: Convert to fraction form
    21,354.63/32,030.97 = 7,315.92/x
  3. Step 3: Cross multiply
    21,354.63x = 32,030.97 × 7,315.92
  4. Step 4: Simplify right side
    21,354.63x = 234,336,014.04
  5. Step 5: Solve for x
    x = 234,336,014.04/21,354.63
  6. Step 6: Final answer
    x = 10,973.55

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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.