Home / 18,678,903.60-28,018,355.40-15,490,257.60

Finding the Fourth Proportional to 18,678,903.60, 28,018,355.40 and 15,490,257.60

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Solution

The fourth proportional to 18,678,903.60, 28,018,355.40 and 15,490,257.60 is: 23,235,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,903.60 : 28,018,355.40 = 15,490,257.60 : x
  2. Step 2: Convert to fraction form
    18,678,903.60/28,018,355.40 = 15,490,257.60/x
  3. Step 3: Cross multiply
    18,678,903.60x = 28,018,355.40 × 15,490,257.60
  4. Step 4: Simplify right side
    18,678,903.60x = 434,011,542,674,351
  5. Step 5: Solve for x
    x = 434,011,542,674,351/18,678,903.60
  6. Step 6: Final answer
    x = 23,235,386.40

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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.