Home / 20,538,411.72-28,344,909.60-11,371,054.56

Finding the Fourth Proportional to 20,538,411.72, 28,344,909.60 and 11,371,054.56

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Solution

The fourth proportional to 20,538,411.72, 28,344,909.60 and 11,371,054.56 is: 15,693,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,411.72 : 28,344,909.60 = 11,371,054.56 : x
  2. Step 2: Convert to fraction form
    20,538,411.72/28,344,909.60 = 11,371,054.56/x
  3. Step 3: Cross multiply
    20,538,411.72x = 28,344,909.60 × 11,371,054.56
  4. Step 4: Simplify right side
    20,538,411.72x = 322,311,513,559,867.81
  5. Step 5: Solve for x
    x = 322,311,513,559,867.81/20,538,411.72
  6. Step 6: Final answer
    x = 15,693,108.01

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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.