Home / 20,739,657.40-31,109,486.10-13,172,054.20

Finding the Fourth Proportional to 20,739,657.40, 31,109,486.10 and 13,172,054.20

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Solution

The fourth proportional to 20,739,657.40, 31,109,486.10 and 13,172,054.20 is: 19,758,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,657.40 : 31,109,486.10 = 13,172,054.20 : x
  2. Step 2: Convert to fraction form
    20,739,657.40/31,109,486.10 = 13,172,054.20/x
  3. Step 3: Cross multiply
    20,739,657.40x = 31,109,486.10 × 13,172,054.20
  4. Step 4: Simplify right side
    20,739,657.40x = 409,775,837,043,346.62
  5. Step 5: Solve for x
    x = 409,775,837,043,346.62/20,739,657.40
  6. Step 6: Final answer
    x = 19,758,081.30

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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.