Home / 20,262.58-27,970.90-12,307.37

Finding the Fourth Proportional to 20,262.58, 27,970.90 and 12,307.37

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Solution

The fourth proportional to 20,262.58, 27,970.90 and 12,307.37 is: 16,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.58 : 27,970.90 = 12,307.37 : x
  2. Step 2: Convert to fraction form
    20,262.58/27,970.90 = 12,307.37/x
  3. Step 3: Cross multiply
    20,262.58x = 27,970.90 × 12,307.37
  4. Step 4: Simplify right side
    20,262.58x = 344,248,044.91
  5. Step 5: Solve for x
    x = 344,248,044.91/20,262.58
  6. Step 6: Final answer
    x = 16,989.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.