Home / 20,697,894.47-28,561,914.55-11,875,475.63

Finding the Fourth Proportional to 20,697,894.47, 28,561,914.55 and 11,875,475.63

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Solution

The fourth proportional to 20,697,894.47, 28,561,914.55 and 11,875,475.63 is: 16,387,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697,894.47 : 28,561,914.55 = 11,875,475.63 : x
  2. Step 2: Convert to fraction form
    20,697,894.47/28,561,914.55 = 11,875,475.63/x
  3. Step 3: Cross multiply
    20,697,894.47x = 28,561,914.55 × 11,875,475.63
  4. Step 4: Simplify right side
    20,697,894.47x = 339,186,320,012,169.12
  5. Step 5: Solve for x
    x = 339,186,320,012,169.12/20,697,894.47
  6. Step 6: Final answer
    x = 16,387,479.44

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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.