Home / 20,558.84-28,368.13-12,057.76

Finding the Fourth Proportional to 20,558.84, 28,368.13 and 12,057.76

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Solution

The fourth proportional to 20,558.84, 28,368.13 and 12,057.76 is: 16,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.84 : 28,368.13 = 12,057.76 : x
  2. Step 2: Convert to fraction form
    20,558.84/28,368.13 = 12,057.76/x
  3. Step 3: Cross multiply
    20,558.84x = 28,368.13 × 12,057.76
  4. Step 4: Simplify right side
    20,558.84x = 342,055,901.06
  5. Step 5: Solve for x
    x = 342,055,901.06/20,558.84
  6. Step 6: Final answer
    x = 16,637.90

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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.