Home / 20,898.40-28,840.25-11,466.98

Finding the Fourth Proportional to 20,898.40, 28,840.25 and 11,466.98

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Solution

The fourth proportional to 20,898.40, 28,840.25 and 11,466.98 is: 15,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.40 : 28,840.25 = 11,466.98 : x
  2. Step 2: Convert to fraction form
    20,898.40/28,840.25 = 11,466.98/x
  3. Step 3: Cross multiply
    20,898.40x = 28,840.25 × 11,466.98
  4. Step 4: Simplify right side
    20,898.40x = 330,710,569.95
  5. Step 5: Solve for x
    x = 330,710,569.95/20,898.40
  6. Step 6: Final answer
    x = 15,824.68

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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.