Home / 20,989.32-28,946.52-14,927.64

Finding the Fourth Proportional to 20,989.32, 28,946.52 and 14,927.64

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Solution

The fourth proportional to 20,989.32, 28,946.52 and 14,927.64 is: 20,586.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.32 : 28,946.52 = 14,927.64 : x
  2. Step 2: Convert to fraction form
    20,989.32/28,946.52 = 14,927.64/x
  3. Step 3: Cross multiply
    20,989.32x = 28,946.52 × 14,927.64
  4. Step 4: Simplify right side
    20,989.32x = 432,103,229.81
  5. Step 5: Solve for x
    x = 432,103,229.81/20,989.32
  6. Step 6: Final answer
    x = 20,586.81

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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.