Home / 21,373,921.11-31,985,200.13-13,290,703.23

Finding the Fourth Proportional to 21,373,921.11, 31,985,200.13 and 13,290,703.23

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Solution

The fourth proportional to 21,373,921.11, 31,985,200.13 and 13,290,703.23 is: 19,888,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373,921.11 : 31,985,200.13 = 13,290,703.23 : x
  2. Step 2: Convert to fraction form
    21,373,921.11/31,985,200.13 = 13,290,703.23/x
  3. Step 3: Cross multiply
    21,373,921.11x = 31,985,200.13 × 13,290,703.23
  4. Step 4: Simplify right side
    21,373,921.11x = 425,105,802,613,533.94
  5. Step 5: Solve for x
    x = 425,105,802,613,533.94/21,373,921.11
  6. Step 6: Final answer
    x = 19,888,994.65

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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.