Home / 30,944.16-42,737.74-20,914.02

Finding the Fourth Proportional to 30,944.16, 42,737.74 and 20,914.02

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Solution

The fourth proportional to 30,944.16, 42,737.74 and 20,914.02 is: 28,884.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,944.16 : 42,737.74 = 20,914.02 : x
  2. Step 2: Convert to fraction form
    30,944.16/42,737.74 = 20,914.02/x
  3. Step 3: Cross multiply
    30,944.16x = 42,737.74 × 20,914.02
  4. Step 4: Simplify right side
    30,944.16x = 893,817,949.11
  5. Step 5: Solve for x
    x = 893,817,949.11/30,944.16
  6. Step 6: Final answer
    x = 28,884.87

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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.