Home / 13,315,808.16-18,375,809.04-7,515,806.40

Finding the Fourth Proportional to 13,315,808.16, 18,375,809.04 and 7,515,806.40

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Solution

The fourth proportional to 13,315,808.16, 18,375,809.04 and 7,515,806.40 is: 10,371,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315,808.16 : 18,375,809.04 = 7,515,806.40 : x
  2. Step 2: Convert to fraction form
    13,315,808.16/18,375,809.04 = 7,515,806.40/x
  3. Step 3: Cross multiply
    13,315,808.16x = 18,375,809.04 × 7,515,806.40
  4. Step 4: Simplify right side
    13,315,808.16x = 138,109,023,188,009.86
  5. Step 5: Solve for x
    x = 138,109,023,188,009.86/13,315,808.16
  6. Step 6: Final answer
    x = 10,371,809.32

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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.