Home / 20,927.58-28,885.04-11,980.25

Finding the Fourth Proportional to 20,927.58, 28,885.04 and 11,980.25

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Solution

The fourth proportional to 20,927.58, 28,885.04 and 11,980.25 is: 16,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.58 : 28,885.04 = 11,980.25 : x
  2. Step 2: Convert to fraction form
    20,927.58/28,885.04 = 11,980.25/x
  3. Step 3: Cross multiply
    20,927.58x = 28,885.04 × 11,980.25
  4. Step 4: Simplify right side
    20,927.58x = 346,050,000.46
  5. Step 5: Solve for x
    x = 346,050,000.46/20,927.58
  6. Step 6: Final answer
    x = 16,535.60

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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.