Home / 18,688,800.60-28,033,200.90-13,209,053.40

Finding the Fourth Proportional to 18,688,800.60, 28,033,200.90 and 13,209,053.40

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Solution

The fourth proportional to 18,688,800.60, 28,033,200.90 and 13,209,053.40 is: 19,813,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,800.60 : 28,033,200.90 = 13,209,053.40 : x
  2. Step 2: Convert to fraction form
    18,688,800.60/28,033,200.90 = 13,209,053.40/x
  3. Step 3: Cross multiply
    18,688,800.60x = 28,033,200.90 × 13,209,053.40
  4. Step 4: Simplify right side
    18,688,800.60x = 370,292,047,661,028.06
  5. Step 5: Solve for x
    x = 370,292,047,661,028.06/18,688,800.60
  6. Step 6: Final answer
    x = 19,813,580.10

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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.