Home / 18,731,803.80-28,083,708.90-10,221,749.40

Finding the Fourth Proportional to 18,731,803.80, 28,083,708.90 and 10,221,749.40

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Solution

The fourth proportional to 18,731,803.80, 28,083,708.90 and 10,221,749.40 is: 15,324,986.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731,803.80 : 28,083,708.90 = 10,221,749.40 : x
  2. Step 2: Convert to fraction form
    18,731,803.80/28,083,708.90 = 10,221,749.40/x
  3. Step 3: Cross multiply
    18,731,803.80x = 28,083,708.90 × 10,221,749.40
  4. Step 4: Simplify right side
    18,731,803.80x = 287,064,634,598,349.62
  5. Step 5: Solve for x
    x = 287,064,634,598,349.62/18,731,803.80
  6. Step 6: Final answer
    x = 15,324,986.19

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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.