Home / 21,317.93-31,977.31-7,281.17

Finding the Fourth Proportional to 21,317.93, 31,977.31 and 7,281.17

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Solution

The fourth proportional to 21,317.93, 31,977.31 and 7,281.17 is: 10,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.93 : 31,977.31 = 7,281.17 : x
  2. Step 2: Convert to fraction form
    21,317.93/31,977.31 = 7,281.17/x
  3. Step 3: Cross multiply
    21,317.93x = 31,977.31 × 7,281.17
  4. Step 4: Simplify right side
    21,317.93x = 232,832,291.99
  5. Step 5: Solve for x
    x = 232,832,291.99/21,317.93
  6. Step 6: Final answer
    x = 10,921.90

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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.