Home / 15,927.18-21,977.10-9,211.47

Finding the Fourth Proportional to 15,927.18, 21,977.10 and 9,211.47

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Solution

The fourth proportional to 15,927.18, 21,977.10 and 9,211.47 is: 12,710.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,927.18 : 21,977.10 = 9,211.47 : x
  2. Step 2: Convert to fraction form
    15,927.18/21,977.10 = 9,211.47/x
  3. Step 3: Cross multiply
    15,927.18x = 21,977.10 × 9,211.47
  4. Step 4: Simplify right side
    15,927.18x = 202,441,397.34
  5. Step 5: Solve for x
    x = 202,441,397.34/15,927.18
  6. Step 6: Final answer
    x = 12,710.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.