Home / 20,898.76-28,840.29-11,946.45

Finding the Fourth Proportional to 20,898.76, 28,840.29 and 11,946.45

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Solution

The fourth proportional to 20,898.76, 28,840.29 and 11,946.45 is: 16,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.76 : 28,840.29 = 11,946.45 : x
  2. Step 2: Convert to fraction form
    20,898.76/28,840.29 = 11,946.45/x
  3. Step 3: Cross multiply
    20,898.76x = 28,840.29 × 11,946.45
  4. Step 4: Simplify right side
    20,898.76x = 344,539,145.82
  5. Step 5: Solve for x
    x = 344,539,145.82/20,898.76
  6. Step 6: Final answer
    x = 16,486.11

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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.