Home / 21,688.38-32,535.81-6,897.78

Finding the Fourth Proportional to 21,688.38, 32,535.81 and 6,897.78

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Solution

The fourth proportional to 21,688.38, 32,535.81 and 6,897.78 is: 10,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688.38 : 32,535.81 = 6,897.78 : x
  2. Step 2: Convert to fraction form
    21,688.38/32,535.81 = 6,897.78/x
  3. Step 3: Cross multiply
    21,688.38x = 32,535.81 × 6,897.78
  4. Step 4: Simplify right side
    21,688.38x = 224,424,859.50
  5. Step 5: Solve for x
    x = 224,424,859.50/21,688.38
  6. Step 6: Final answer
    x = 10,347.70

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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.