Home / 21,705.81-32,561.33-7,662.95

Finding the Fourth Proportional to 21,705.81, 32,561.33 and 7,662.95

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Solution

The fourth proportional to 21,705.81, 32,561.33 and 7,662.95 is: 11,495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.81 : 32,561.33 = 7,662.95 : x
  2. Step 2: Convert to fraction form
    21,705.81/32,561.33 = 7,662.95/x
  3. Step 3: Cross multiply
    21,705.81x = 32,561.33 × 7,662.95
  4. Step 4: Simplify right side
    21,705.81x = 249,515,642.60
  5. Step 5: Solve for x
    x = 249,515,642.60/21,705.81
  6. Step 6: Final answer
    x = 11,495.34

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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.