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Finding the Fourth Proportional to 18,927.84, 28,245.93 and 16,624.20

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Solution

The fourth proportional to 18,927.84, 28,245.93 and 16,624.20 is: 24,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.84 : 28,245.93 = 16,624.20 : x
  2. Step 2: Convert to fraction form
    18,927.84/28,245.93 = 16,624.20/x
  3. Step 3: Cross multiply
    18,927.84x = 28,245.93 × 16,624.20
  4. Step 4: Simplify right side
    18,927.84x = 469,565,989.51
  5. Step 5: Solve for x
    x = 469,565,989.51/18,927.84
  6. Step 6: Final answer
    x = 24,808.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.