Home / 21,004,835.60-31,444,267.80-12,480,784.40

Finding the Fourth Proportional to 21,004,835.60, 31,444,267.80 and 12,480,784.40

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Solution

The fourth proportional to 21,004,835.60, 31,444,267.80 and 12,480,784.40 is: 18,683,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,835.60 : 31,444,267.80 = 12,480,784.40 : x
  2. Step 2: Convert to fraction form
    21,004,835.60/31,444,267.80 = 12,480,784.40/x
  3. Step 3: Cross multiply
    21,004,835.60x = 31,444,267.80 × 12,480,784.40
  4. Step 4: Simplify right side
    21,004,835.60x = 392,449,127,027,662.31
  5. Step 5: Solve for x
    x = 392,449,127,027,662.31/21,004,835.60
  6. Step 6: Final answer
    x = 18,683,751.42

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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.