Home / 18,688,738.40-28,038,356.40-9,104,429.60

Finding the Fourth Proportional to 18,688,738.40, 28,038,356.40 and 9,104,429.60

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Solution

The fourth proportional to 18,688,738.40, 28,038,356.40 and 9,104,429.60 is: 13,659,201.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,738.40 : 28,038,356.40 = 9,104,429.60 : x
  2. Step 2: Convert to fraction form
    18,688,738.40/28,038,356.40 = 9,104,429.60/x
  3. Step 3: Cross multiply
    18,688,738.40x = 28,038,356.40 × 9,104,429.60
  4. Step 4: Simplify right side
    18,688,738.40x = 255,273,241,943,509.41
  5. Step 5: Solve for x
    x = 255,273,241,943,509.41/18,688,738.40
  6. Step 6: Final answer
    x = 13,659,201.41

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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.