Home / 13,315,817.16-18,375,821.46-7,515,815.40

Finding the Fourth Proportional to 13,315,817.16, 18,375,821.46 and 7,515,815.40

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Solution

The fourth proportional to 13,315,817.16, 18,375,821.46 and 7,515,815.40 is: 10,371,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315,817.16 : 18,375,821.46 = 7,515,815.40 : x
  2. Step 2: Convert to fraction form
    13,315,817.16/18,375,821.46 = 7,515,815.40/x
  3. Step 3: Cross multiply
    13,315,817.16x = 18,375,821.46 × 7,515,815.40
  4. Step 4: Simplify right side
    13,315,817.16x = 138,109,281,916,718.50
  5. Step 5: Solve for x
    x = 138,109,281,916,718.50/13,315,817.16
  6. Step 6: Final answer
    x = 10,371,821.74

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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.