Home / 31,037.84-42,830.92-16,890.76

Finding the Fourth Proportional to 31,037.84, 42,830.92 and 16,890.76

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Solution

The fourth proportional to 31,037.84, 42,830.92 and 16,890.76 is: 23,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,037.84 : 42,830.92 = 16,890.76 : x
  2. Step 2: Convert to fraction form
    31,037.84/42,830.92 = 16,890.76/x
  3. Step 3: Cross multiply
    31,037.84x = 42,830.92 × 16,890.76
  4. Step 4: Simplify right side
    31,037.84x = 723,446,790.30
  5. Step 5: Solve for x
    x = 723,446,790.30/31,037.84
  6. Step 6: Final answer
    x = 23,308.54

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Half scale
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Double scale
Find fourth proportional to 31,038.84, 42,832.30 and 16,891.76
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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.