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Finding the Fourth Proportional to 28,200.40, 38,916.04 and 16,264.24

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Solution

The fourth proportional to 28,200.40, 38,916.04 and 16,264.24 is: 22,444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.40 : 38,916.04 = 16,264.24 : x
  2. Step 2: Convert to fraction form
    28,200.40/38,916.04 = 16,264.24/x
  3. Step 3: Cross multiply
    28,200.40x = 38,916.04 × 16,264.24
  4. Step 4: Simplify right side
    28,200.40x = 632,939,814.41
  5. Step 5: Solve for x
    x = 632,939,814.41/28,200.40
  6. Step 6: Final answer
    x = 22,444.36

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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.