Home / 30,838.67-42,558.40-18,899.70

Finding the Fourth Proportional to 30,838.67, 42,558.40 and 18,899.70

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Solution

The fourth proportional to 30,838.67, 42,558.40 and 18,899.70 is: 26,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.67 : 42,558.40 = 18,899.70 : x
  2. Step 2: Convert to fraction form
    30,838.67/42,558.40 = 18,899.70/x
  3. Step 3: Cross multiply
    30,838.67x = 42,558.40 × 18,899.70
  4. Step 4: Simplify right side
    30,838.67x = 804,340,897.98
  5. Step 5: Solve for x
    x = 804,340,897.98/30,838.67
  6. Step 6: Final answer
    x = 26,082.22

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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.