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Finding the Fourth Proportional to 28,124.66, 38,810.84 and 16,188.40

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Solution

The fourth proportional to 28,124.66, 38,810.84 and 16,188.40 is: 22,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.66 : 38,810.84 = 16,188.40 : x
  2. Step 2: Convert to fraction form
    28,124.66/38,810.84 = 16,188.40/x
  3. Step 3: Cross multiply
    28,124.66x = 38,810.84 × 16,188.40
  4. Step 4: Simplify right side
    28,124.66x = 628,285,402.26
  5. Step 5: Solve for x
    x = 628,285,402.26/28,124.66
  6. Step 6: Final answer
    x = 22,339.31

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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.