Home / 21,235,145.73-31,697,693.96-18,221,875.26

Finding the Fourth Proportional to 21,235,145.73, 31,697,693.96 and 18,221,875.26

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Solution

The fourth proportional to 21,235,145.73, 31,697,693.96 and 18,221,875.26 is: 27,199,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,145.73 : 31,697,693.96 = 18,221,875.26 : x
  2. Step 2: Convert to fraction form
    21,235,145.73/31,697,693.96 = 18,221,875.26/x
  3. Step 3: Cross multiply
    21,235,145.73x = 31,697,693.96 × 18,221,875.26
  4. Step 4: Simplify right side
    21,235,145.73x = 577,591,425,368,775.50
  5. Step 5: Solve for x
    x = 577,591,425,368,775.50/21,235,145.73
  6. Step 6: Final answer
    x = 27,199,786.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.