Home / 21,276,987.60-31,915,481.40-12,667,643.40

Finding the Fourth Proportional to 21,276,987.60, 31,915,481.40 and 12,667,643.40

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Solution

The fourth proportional to 21,276,987.60, 31,915,481.40 and 12,667,643.40 is: 19,001,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,987.60 : 31,915,481.40 = 12,667,643.40 : x
  2. Step 2: Convert to fraction form
    21,276,987.60/31,915,481.40 = 12,667,643.40/x
  3. Step 3: Cross multiply
    21,276,987.60x = 31,915,481.40 × 12,667,643.40
  4. Step 4: Simplify right side
    21,276,987.60x = 404,293,937,314,532.75
  5. Step 5: Solve for x
    x = 404,293,937,314,532.75/21,276,987.60
  6. Step 6: Final answer
    x = 19,001,465.10

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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.