Home / 21,001,853.10-31,439,794.05-12,477,801.90

Finding the Fourth Proportional to 21,001,853.10, 31,439,794.05 and 12,477,801.90

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Solution

The fourth proportional to 21,001,853.10, 31,439,794.05 and 12,477,801.90 is: 18,679,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,853.10 : 31,439,794.05 = 12,477,801.90 : x
  2. Step 2: Convert to fraction form
    21,001,853.10/31,439,794.05 = 12,477,801.90/x
  3. Step 3: Cross multiply
    21,001,853.10x = 31,439,794.05 × 12,477,801.90
  4. Step 4: Simplify right side
    21,001,853.10x = 392,299,521,932,698.69
  5. Step 5: Solve for x
    x = 392,299,521,932,698.69/21,001,853.10
  6. Step 6: Final answer
    x = 18,679,281.30

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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.