Home / 21,395.40-32,006.70-18,505.80

Finding the Fourth Proportional to 21,395.40, 32,006.70 and 18,505.80

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Solution

The fourth proportional to 21,395.40, 32,006.70 and 18,505.80 is: 27,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.40 : 32,006.70 = 18,505.80 : x
  2. Step 2: Convert to fraction form
    21,395.40/32,006.70 = 18,505.80/x
  3. Step 3: Cross multiply
    21,395.40x = 32,006.70 × 18,505.80
  4. Step 4: Simplify right side
    21,395.40x = 592,309,588.86
  5. Step 5: Solve for x
    x = 592,309,588.86/21,395.40
  6. Step 6: Final answer
    x = 27,683.97

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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.