Home / 21,071.57-31,607.33-6,280.11

Finding the Fourth Proportional to 21,071.57, 31,607.33 and 6,280.11

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Solution

The fourth proportional to 21,071.57, 31,607.33 and 6,280.11 is: 9,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.57 : 31,607.33 = 6,280.11 : x
  2. Step 2: Convert to fraction form
    21,071.57/31,607.33 = 6,280.11/x
  3. Step 3: Cross multiply
    21,071.57x = 31,607.33 × 6,280.11
  4. Step 4: Simplify right side
    21,071.57x = 198,497,477.81
  5. Step 5: Solve for x
    x = 198,497,477.81/21,071.57
  6. Step 6: Final answer
    x = 9,420.16

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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.