Home / 21,047,712.40-31,565,007.60-8,272,133.20

Finding the Fourth Proportional to 21,047,712.40, 31,565,007.60 and 8,272,133.20

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Solution

The fourth proportional to 21,047,712.40, 31,565,007.60 and 8,272,133.20 is: 12,405,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,712.40 : 31,565,007.60 = 8,272,133.20 : x
  2. Step 2: Convert to fraction form
    21,047,712.40/31,565,007.60 = 8,272,133.20/x
  3. Step 3: Cross multiply
    21,047,712.40x = 31,565,007.60 × 8,272,133.20
  4. Step 4: Simplify right side
    21,047,712.40x = 261,109,947,326,212.34
  5. Step 5: Solve for x
    x = 261,109,947,326,212.34/21,047,712.40
  6. Step 6: Final answer
    x = 12,405,621.21

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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.