Home / 20,689,719.40-28,547,444.46-11,987,362.09

Finding the Fourth Proportional to 20,689,719.40, 28,547,444.46 and 11,987,362.09

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Solution

The fourth proportional to 20,689,719.40, 28,547,444.46 and 11,987,362.09 is: 16,540,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,719.40 : 28,547,444.46 = 11,987,362.09 : x
  2. Step 2: Convert to fraction form
    20,689,719.40/28,547,444.46 = 11,987,362.09/x
  3. Step 3: Cross multiply
    20,689,719.40x = 28,547,444.46 × 11,987,362.09
  4. Step 4: Simplify right side
    20,689,719.40x = 342,208,553,486,184.50
  5. Step 5: Solve for x
    x = 342,208,553,486,184.50/20,689,719.40
  6. Step 6: Final answer
    x = 16,540,028.74

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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.