Home / 20,521,973.20-30,762,655.80-9,720,288.40

Finding the Fourth Proportional to 20,521,973.20, 30,762,655.80 and 9,720,288.40

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Solution

The fourth proportional to 20,521,973.20, 30,762,655.80 and 9,720,288.40 is: 14,570,815.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521,973.20 : 30,762,655.80 = 9,720,288.40 : x
  2. Step 2: Convert to fraction form
    20,521,973.20/30,762,655.80 = 9,720,288.40/x
  3. Step 3: Cross multiply
    20,521,973.20x = 30,762,655.80 × 9,720,288.40
  4. Step 4: Simplify right side
    20,521,973.20x = 299,021,886,325,932.75
  5. Step 5: Solve for x
    x = 299,021,886,325,932.75/20,521,973.20
  6. Step 6: Final answer
    x = 14,570,815.56

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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.