Home / 20,709,084.09-28,577,800.34-11,289,680.40

Finding the Fourth Proportional to 20,709,084.09, 28,577,800.34 and 11,289,680.40

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Solution

The fourth proportional to 20,709,084.09, 28,577,800.34 and 11,289,680.40 is: 15,579,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709,084.09 : 28,577,800.34 = 11,289,680.40 : x
  2. Step 2: Convert to fraction form
    20,709,084.09/28,577,800.34 = 11,289,680.40/x
  3. Step 3: Cross multiply
    20,709,084.09x = 28,577,800.34 × 11,289,680.40
  4. Step 4: Simplify right side
    20,709,084.09x = 322,634,232,401,835.56
  5. Step 5: Solve for x
    x = 322,634,232,401,835.56/20,709,084.09
  6. Step 6: Final answer
    x = 15,579,357.88

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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.