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Finding the Fourth Proportional to 18,470,728.16, 25,489,639.40 and 10,321,966.16

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Solution

The fourth proportional to 18,470,728.16, 25,489,639.40 and 10,321,966.16 is: 14,244,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470,728.16 : 25,489,639.40 = 10,321,966.16 : x
  2. Step 2: Convert to fraction form
    18,470,728.16/25,489,639.40 = 10,321,966.16/x
  3. Step 3: Cross multiply
    18,470,728.16x = 25,489,639.40 × 10,321,966.16
  4. Step 4: Simplify right side
    18,470,728.16x = 263,103,195,317,402.69
  5. Step 5: Solve for x
    x = 263,103,195,317,402.69/18,470,728.16
  6. Step 6: Final answer
    x = 14,244,332.60

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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.