Home / 20,622.68-28,459.93-12,123.24

Finding the Fourth Proportional to 20,622.68, 28,459.93 and 12,123.24

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Solution

The fourth proportional to 20,622.68, 28,459.93 and 12,123.24 is: 16,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.68 : 28,459.93 = 12,123.24 : x
  2. Step 2: Convert to fraction form
    20,622.68/28,459.93 = 12,123.24/x
  3. Step 3: Cross multiply
    20,622.68x = 28,459.93 × 12,123.24
  4. Step 4: Simplify right side
    20,622.68x = 345,026,561.77
  5. Step 5: Solve for x
    x = 345,026,561.77/20,622.68
  6. Step 6: Final answer
    x = 16,730.44

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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.