Home / 20,688.57-31,037.67-5,897.70

Finding the Fourth Proportional to 20,688.57, 31,037.67 and 5,897.70

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Solution

The fourth proportional to 20,688.57, 31,037.67 and 5,897.70 is: 8,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.57 : 31,037.67 = 5,897.70 : x
  2. Step 2: Convert to fraction form
    20,688.57/31,037.67 = 5,897.70/x
  3. Step 3: Cross multiply
    20,688.57x = 31,037.67 × 5,897.70
  4. Step 4: Simplify right side
    20,688.57x = 183,050,866.36
  5. Step 5: Solve for x
    x = 183,050,866.36/20,688.57
  6. Step 6: Final answer
    x = 8,847.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.