Home / 20,490,099.12-28,276,346.70-11,322,741.87

Finding the Fourth Proportional to 20,490,099.12, 28,276,346.70 and 11,322,741.87

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Solution

The fourth proportional to 20,490,099.12, 28,276,346.70 and 11,322,741.87 is: 15,625,389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490,099.12 : 28,276,346.70 = 11,322,741.87 : x
  2. Step 2: Convert to fraction form
    20,490,099.12/28,276,346.70 = 11,322,741.87/x
  3. Step 3: Cross multiply
    20,490,099.12x = 28,276,346.70 × 11,322,741.87
  4. Step 4: Simplify right side
    20,490,099.12x = 320,165,774,710,726.31
  5. Step 5: Solve for x
    x = 320,165,774,710,726.31/20,490,099.12
  6. Step 6: Final answer
    x = 15,625,389.26

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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.