Home / 20,787,408.90-28,686,809.85-11,495,607.69

Finding the Fourth Proportional to 20,787,408.90, 28,686,809.85 and 11,495,607.69

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Solution

The fourth proportional to 20,787,408.90, 28,686,809.85 and 11,495,607.69 is: 15,864,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787,408.90 : 28,686,809.85 = 11,495,607.69 : x
  2. Step 2: Convert to fraction form
    20,787,408.90/28,686,809.85 = 11,495,607.69/x
  3. Step 3: Cross multiply
    20,787,408.90x = 28,686,809.85 × 11,495,607.69
  4. Step 4: Simplify right side
    20,787,408.90x = 329,772,311,913,227.75
  5. Step 5: Solve for x
    x = 329,772,311,913,227.75/20,787,408.90
  6. Step 6: Final answer
    x = 15,864,041.23

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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.