Home / 20,406,705.54-28,161,253.62-11,239,348.32

Finding the Fourth Proportional to 20,406,705.54, 28,161,253.62 and 11,239,348.32

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Solution

The fourth proportional to 20,406,705.54, 28,161,253.62 and 11,239,348.32 is: 15,510,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,705.54 : 28,161,253.62 = 11,239,348.32 : x
  2. Step 2: Convert to fraction form
    20,406,705.54/28,161,253.62 = 11,239,348.32/x
  3. Step 3: Cross multiply
    20,406,705.54x = 28,161,253.62 × 11,239,348.32
  4. Step 4: Simplify right side
    20,406,705.54x = 316,514,138,563,040.94
  5. Step 5: Solve for x
    x = 316,514,138,563,040.94/20,406,705.54
  6. Step 6: Final answer
    x = 15,510,300.67

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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.