Home / 15,781,430.88-21,778,379.28-8,907,369.12

Finding the Fourth Proportional to 15,781,430.88, 21,778,379.28 and 8,907,369.12

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Solution

The fourth proportional to 15,781,430.88, 21,778,379.28 and 8,907,369.12 is: 12,292,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781,430.88 : 21,778,379.28 = 8,907,369.12 : x
  2. Step 2: Convert to fraction form
    15,781,430.88/21,778,379.28 = 8,907,369.12/x
  3. Step 3: Cross multiply
    15,781,430.88x = 21,778,379.28 × 8,907,369.12
  4. Step 4: Simplify right side
    15,781,430.88x = 193,988,063,082,319.81
  5. Step 5: Solve for x
    x = 193,988,063,082,319.81/15,781,430.88
  6. Step 6: Final answer
    x = 12,292,172.02

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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.