Home / 20,702,745-28,569,901.40-12,006,073.84

Finding the Fourth Proportional to 20,702,745, 28,569,901.40 and 12,006,073.84

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Solution

The fourth proportional to 20,702,745, 28,569,901.40 and 12,006,073.84 is: 16,568,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,745 : 28,569,901.40 = 12,006,073.84 : x
  2. Step 2: Convert to fraction form
    20,702,745/28,569,901.40 = 12,006,073.84/x
  3. Step 3: Cross multiply
    20,702,745x = 28,569,901.40 × 12,006,073.84
  4. Step 4: Simplify right side
    20,702,745x = 343,012,345,809,919.38
  5. Step 5: Solve for x
    x = 343,012,345,809,919.38/20,702,745
  6. Step 6: Final answer
    x = 16,568,447.60

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1.5x scale

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.