Home / 13,324,512.25-18,387,953.65-7,817,980.80

Finding the Fourth Proportional to 13,324,512.25, 18,387,953.65 and 7,817,980.80

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Solution

The fourth proportional to 13,324,512.25, 18,387,953.65 and 7,817,980.80 is: 10,788,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324,512.25 : 18,387,953.65 = 7,817,980.80 : x
  2. Step 2: Convert to fraction form
    13,324,512.25/18,387,953.65 = 7,817,980.80/x
  3. Step 3: Cross multiply
    13,324,512.25x = 18,387,953.65 × 7,817,980.80
  4. Step 4: Simplify right side
    13,324,512.25x = 143,756,668,586,989.91
  5. Step 5: Solve for x
    x = 143,756,668,586,989.91/13,324,512.25
  6. Step 6: Final answer
    x = 10,788,887.87

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Double scale
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1.5x scale

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.