Home / 20,778,412.90-31,140,439.80-11,173,108.90

Finding the Fourth Proportional to 20,778,412.90, 31,140,439.80 and 11,173,108.90

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Solution

The fourth proportional to 20,778,412.90, 31,140,439.80 and 11,173,108.90 is: 16,745,048.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,412.90 : 31,140,439.80 = 11,173,108.90 : x
  2. Step 2: Convert to fraction form
    20,778,412.90/31,140,439.80 = 11,173,108.90/x
  3. Step 3: Cross multiply
    20,778,412.90x = 31,140,439.80 × 11,173,108.90
  4. Step 4: Simplify right side
    20,778,412.90x = 347,935,525,079,294.25
  5. Step 5: Solve for x
    x = 347,935,525,079,294.25/20,778,412.90
  6. Step 6: Final answer
    x = 16,745,048.18

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1.5x scale

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.