Home / 20,808,834.30-31,213,251.45-15,769,986.30

Finding the Fourth Proportional to 20,808,834.30, 31,213,251.45 and 15,769,986.30

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Solution

The fourth proportional to 20,808,834.30, 31,213,251.45 and 15,769,986.30 is: 23,654,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,834.30 : 31,213,251.45 = 15,769,986.30 : x
  2. Step 2: Convert to fraction form
    20,808,834.30/31,213,251.45 = 15,769,986.30/x
  3. Step 3: Cross multiply
    20,808,834.30x = 31,213,251.45 × 15,769,986.30
  4. Step 4: Simplify right side
    20,808,834.30x = 492,232,547,744,955.12
  5. Step 5: Solve for x
    x = 492,232,547,744,955.12/20,808,834.30
  6. Step 6: Final answer
    x = 23,654,979.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.