Home / 15,661,340.68-21,621,916.20-9,865,090.84

Finding the Fourth Proportional to 15,661,340.68, 21,621,916.20 and 9,865,090.84

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Solution

The fourth proportional to 15,661,340.68, 21,621,916.20 and 9,865,090.84 is: 13,619,662.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,340.68 : 21,621,916.20 = 9,865,090.84 : x
  2. Step 2: Convert to fraction form
    15,661,340.68/21,621,916.20 = 9,865,090.84/x
  3. Step 3: Cross multiply
    15,661,340.68x = 21,621,916.20 × 9,865,090.84
  4. Step 4: Simplify right side
    15,661,340.68x = 213,302,167,447,867.59
  5. Step 5: Solve for x
    x = 213,302,167,447,867.59/15,661,340.68
  6. Step 6: Final answer
    x = 13,619,662.06

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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.