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Finding the Fourth Proportional to 28,095.60, 42,143.40 and 14,941.20

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Solution

The fourth proportional to 28,095.60, 42,143.40 and 14,941.20 is: 22,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.60 : 42,143.40 = 14,941.20 : x
  2. Step 2: Convert to fraction form
    28,095.60/42,143.40 = 14,941.20/x
  3. Step 3: Cross multiply
    28,095.60x = 42,143.40 × 14,941.20
  4. Step 4: Simplify right side
    28,095.60x = 629,672,968.08
  5. Step 5: Solve for x
    x = 629,672,968.08/28,095.60
  6. Step 6: Final answer
    x = 22,411.80

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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.