Home / 21,569.09-32,357.71-8,420.63

Finding the Fourth Proportional to 21,569.09, 32,357.71 and 8,420.63

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Solution

The fourth proportional to 21,569.09, 32,357.71 and 8,420.63 is: 12,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.09 : 32,357.71 = 8,420.63 : x
  2. Step 2: Convert to fraction form
    21,569.09/32,357.71 = 8,420.63/x
  3. Step 3: Cross multiply
    21,569.09x = 32,357.71 × 8,420.63
  4. Step 4: Simplify right side
    21,569.09x = 272,472,152.29
  5. Step 5: Solve for x
    x = 272,472,152.29/21,569.09
  6. Step 6: Final answer
    x = 12,632.53

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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.