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Finding the Fourth Proportional to 18,363.62, 25,341.89 and 10,407.39

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Solution

The fourth proportional to 18,363.62, 25,341.89 and 10,407.39 is: 14,362.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.62 : 25,341.89 = 10,407.39 : x
  2. Step 2: Convert to fraction form
    18,363.62/25,341.89 = 10,407.39/x
  3. Step 3: Cross multiply
    18,363.62x = 25,341.89 × 10,407.39
  4. Step 4: Simplify right side
    18,363.62x = 263,742,880.53
  5. Step 5: Solve for x
    x = 263,742,880.53/18,363.62
  6. Step 6: Final answer
    x = 14,362.25

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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.