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Finding the Fourth Proportional to 18,901,868.40, 28,352,802.60 and 18,901,868.40

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Solution

The fourth proportional to 18,901,868.40, 28,352,802.60 and 18,901,868.40 is: 28,352,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,868.40 : 28,352,802.60 = 18,901,868.40 : x
  2. Step 2: Convert to fraction form
    18,901,868.40/28,352,802.60 = 18,901,868.40/x
  3. Step 3: Cross multiply
    18,901,868.40x = 28,352,802.60 × 18,901,868.40
  4. Step 4: Simplify right side
    18,901,868.40x = 535,920,943,516,377.81
  5. Step 5: Solve for x
    x = 535,920,943,516,377.81/18,901,868.40
  6. Step 6: Final answer
    x = 28,352,802.60

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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.