Home / 20,405,547.78-28,160,928.52-11,238,188.10

Finding the Fourth Proportional to 20,405,547.78, 28,160,928.52 and 11,238,188.10

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Solution

The fourth proportional to 20,405,547.78, 28,160,928.52 and 11,238,188.10 is: 15,509,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,547.78 : 28,160,928.52 = 11,238,188.10 : x
  2. Step 2: Convert to fraction form
    20,405,547.78/28,160,928.52 = 11,238,188.10/x
  3. Step 3: Cross multiply
    20,405,547.78x = 28,160,928.52 × 11,238,188.10
  4. Step 4: Simplify right side
    20,405,547.78x = 316,477,811,778,414.62
  5. Step 5: Solve for x
    x = 316,477,811,778,414.62/20,405,547.78
  6. Step 6: Final answer
    x = 15,509,400.44

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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.