Home / 15,309,646.40-21,127,582.24-8,434,081.60

Finding the Fourth Proportional to 15,309,646.40, 21,127,582.24 and 8,434,081.60

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Solution

The fourth proportional to 15,309,646.40, 21,127,582.24 and 8,434,081.60 is: 11,639,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309,646.40 : 21,127,582.24 = 8,434,081.60 : x
  2. Step 2: Convert to fraction form
    15,309,646.40/21,127,582.24 = 8,434,081.60/x
  3. Step 3: Cross multiply
    15,309,646.40x = 21,127,582.24 × 8,434,081.60
  4. Step 4: Simplify right side
    15,309,646.40x = 178,191,752,622,870.75
  5. Step 5: Solve for x
    x = 178,191,752,622,870.75/15,309,646.40
  6. Step 6: Final answer
    x = 11,639,181.47

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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.