Home / 28,731.50-39,649.08-16,156.28

Finding the Fourth Proportional to 28,731.50, 39,649.08 and 16,156.28

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Solution

The fourth proportional to 28,731.50, 39,649.08 and 16,156.28 is: 22,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.50 : 39,649.08 = 16,156.28 : x
  2. Step 2: Convert to fraction form
    28,731.50/39,649.08 = 16,156.28/x
  3. Step 3: Cross multiply
    28,731.50x = 39,649.08 × 16,156.28
  4. Step 4: Simplify right side
    28,731.50x = 640,581,638.22
  5. Step 5: Solve for x
    x = 640,581,638.22/28,731.50
  6. Step 6: Final answer
    x = 22,295.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.