Home / 13,932,021.20-20,898,031.80-12,443,986.40

Finding the Fourth Proportional to 13,932,021.20, 20,898,031.80 and 12,443,986.40

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Solution

The fourth proportional to 13,932,021.20, 20,898,031.80 and 12,443,986.40 is: 18,665,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932,021.20 : 20,898,031.80 = 12,443,986.40 : x
  2. Step 2: Convert to fraction form
    13,932,021.20/20,898,031.80 = 12,443,986.40/x
  3. Step 3: Cross multiply
    13,932,021.20x = 20,898,031.80 × 12,443,986.40
  4. Step 4: Simplify right side
    13,932,021.20x = 260,054,823,505,967.53
  5. Step 5: Solve for x
    x = 260,054,823,505,967.53/13,932,021.20
  6. Step 6: Final answer
    x = 18,665,979.60

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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.