Home / 21,004,066.60-31,443,114.30-12,480,015.40

Finding the Fourth Proportional to 21,004,066.60, 31,443,114.30 and 12,480,015.40

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Solution

The fourth proportional to 21,004,066.60, 31,443,114.30 and 12,480,015.40 is: 18,682,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,066.60 : 31,443,114.30 = 12,480,015.40 : x
  2. Step 2: Convert to fraction form
    21,004,066.60/31,443,114.30 = 12,480,015.40/x
  3. Step 3: Cross multiply
    21,004,066.60x = 31,443,114.30 × 12,480,015.40
  4. Step 4: Simplify right side
    21,004,066.60x = 392,410,550,687,960.25
  5. Step 5: Solve for x
    x = 392,410,550,687,960.25/21,004,066.60
  6. Step 6: Final answer
    x = 18,682,598.86

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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.