Home / 20,768,031.30-31,152,046.95-11,810,079.30

Finding the Fourth Proportional to 20,768,031.30, 31,152,046.95 and 11,810,079.30

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Solution

The fourth proportional to 20,768,031.30, 31,152,046.95 and 11,810,079.30 is: 17,715,118.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768,031.30 : 31,152,046.95 = 11,810,079.30 : x
  2. Step 2: Convert to fraction form
    20,768,031.30/31,152,046.95 = 11,810,079.30/x
  3. Step 3: Cross multiply
    20,768,031.30x = 31,152,046.95 × 11,810,079.30
  4. Step 4: Simplify right side
    20,768,031.30x = 367,908,144,836,823.12
  5. Step 5: Solve for x
    x = 367,908,144,836,823.12/20,768,031.30
  6. Step 6: Final answer
    x = 17,715,118.95

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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.