Home / 21,005,005.80-31,507,508.70-17,757,748.20

Finding the Fourth Proportional to 21,005,005.80, 31,507,508.70 and 17,757,748.20

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Solution

The fourth proportional to 21,005,005.80, 31,507,508.70 and 17,757,748.20 is: 26,636,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,005.80 : 31,507,508.70 = 17,757,748.20 : x
  2. Step 2: Convert to fraction form
    21,005,005.80/31,507,508.70 = 17,757,748.20/x
  3. Step 3: Cross multiply
    21,005,005.80x = 31,507,508.70 × 17,757,748.20
  4. Step 4: Simplify right side
    21,005,005.80x = 559,502,405,903,909.31
  5. Step 5: Solve for x
    x = 559,502,405,903,909.31/21,005,005.80
  6. Step 6: Final answer
    x = 26,636,622.30

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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.