Home / 21,088.40-31,631.81-5,293.53

Finding the Fourth Proportional to 21,088.40, 31,631.81 and 5,293.53

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Solution

The fourth proportional to 21,088.40, 31,631.81 and 5,293.53 is: 7,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.40 : 31,631.81 = 5,293.53 : x
  2. Step 2: Convert to fraction form
    21,088.40/31,631.81 = 5,293.53/x
  3. Step 3: Cross multiply
    21,088.40x = 31,631.81 × 5,293.53
  4. Step 4: Simplify right side
    21,088.40x = 167,443,908.72
  5. Step 5: Solve for x
    x = 167,443,908.72/21,088.40
  6. Step 6: Final answer
    x = 7,940.10

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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.