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Finding the Fourth Proportional to 18,802.44, 28,204.44 and 15,509.40

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Solution

The fourth proportional to 18,802.44, 28,204.44 and 15,509.40 is: 23,264.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.44 : 28,204.44 = 15,509.40 : x
  2. Step 2: Convert to fraction form
    18,802.44/28,204.44 = 15,509.40/x
  3. Step 3: Cross multiply
    18,802.44x = 28,204.44 × 15,509.40
  4. Step 4: Simplify right side
    18,802.44x = 437,433,941.74
  5. Step 5: Solve for x
    x = 437,433,941.74/18,802.44
  6. Step 6: Final answer
    x = 23,264.74

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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.