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Finding the Fourth Proportional to 28,602.60, 42,909.32 and 10,838.60

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Solution

The fourth proportional to 28,602.60, 42,909.32 and 10,838.60 is: 16,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.60 : 42,909.32 = 10,838.60 : x
  2. Step 2: Convert to fraction form
    28,602.60/42,909.32 = 10,838.60/x
  3. Step 3: Cross multiply
    28,602.60x = 42,909.32 × 10,838.60
  4. Step 4: Simplify right side
    28,602.60x = 465,076,955.75
  5. Step 5: Solve for x
    x = 465,076,955.75/28,602.60
  6. Step 6: Final answer
    x = 16,259.95

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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.