Home / 20,156,414,731.80-30,239,157,060.90-11,871,036,965.40

Finding the Fourth Proportional to 20,156,414,731.80, 30,239,157,060.90 and 11,871,036,965.40

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Solution

The fourth proportional to 20,156,414,731.80, 30,239,157,060.90 and 11,871,036,965.40 is: 17,809,226,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156,414,731.80 : 30,239,157,060.90 = 11,871,036,965.40 : x
  2. Step 2: Convert to fraction form
    20,156,414,731.80/30,239,157,060.90 = 11,871,036,965.40/x
  3. Step 3: Cross multiply
    20,156,414,731.80x = 30,239,157,060.90 × 11,871,036,965.40
  4. Step 4: Simplify right side
    20,156,414,731.80x = 358,970,151,272,480,309,248
  5. Step 5: Solve for x
    x = 358,970,151,272,480,309,248/20,156,414,731.80
  6. Step 6: Final answer
    x = 17,809,226,295.89

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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.