Home / 20,521,703.20-30,762,250.80-9,720,018.40

Finding the Fourth Proportional to 20,521,703.20, 30,762,250.80 and 9,720,018.40

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Solution

The fourth proportional to 20,521,703.20, 30,762,250.80 and 9,720,018.40 is: 14,570,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521,703.20 : 30,762,250.80 = 9,720,018.40 : x
  2. Step 2: Convert to fraction form
    20,521,703.20/30,762,250.80 = 9,720,018.40/x
  3. Step 3: Cross multiply
    20,521,703.20x = 30,762,250.80 × 9,720,018.40
  4. Step 4: Simplify right side
    20,521,703.20x = 299,009,643,801,414.75
  5. Step 5: Solve for x
    x = 299,009,643,801,414.75/20,521,703.20
  6. Step 6: Final answer
    x = 14,570,410.70

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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.