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Finding the Fourth Proportional to 21,569.30, 32,353.97 and 6,779.51

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Solution

The fourth proportional to 21,569.30, 32,353.97 and 6,779.51 is: 10,169.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.30 : 32,353.97 = 6,779.51 : x
  2. Step 2: Convert to fraction form
    21,569.30/32,353.97 = 6,779.51/x
  3. Step 3: Cross multiply
    21,569.30x = 32,353.97 × 6,779.51
  4. Step 4: Simplify right side
    21,569.30x = 219,343,867.49
  5. Step 5: Solve for x
    x = 219,343,867.49/21,569.30
  6. Step 6: Final answer
    x = 10,169.26

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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.