Home / 20,406,191.09-28,162,532.81-15,240,584.57

Finding the Fourth Proportional to 20,406,191.09, 28,162,532.81 and 15,240,584.57

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Solution

The fourth proportional to 20,406,191.09, 28,162,532.81 and 15,240,584.57 is: 21,033,492.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,191.09 : 28,162,532.81 = 15,240,584.57 : x
  2. Step 2: Convert to fraction form
    20,406,191.09/28,162,532.81 = 15,240,584.57/x
  3. Step 3: Cross multiply
    20,406,191.09x = 28,162,532.81 × 15,240,584.57
  4. Step 4: Simplify right side
    20,406,191.09x = 429,213,462,920,001.81
  5. Step 5: Solve for x
    x = 429,213,462,920,001.81/20,406,191.09
  6. Step 6: Final answer
    x = 21,033,492.29

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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.