Home / 20,897.40-31,348.84-11,037.07

Finding the Fourth Proportional to 20,897.40, 31,348.84 and 11,037.07

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Solution

The fourth proportional to 20,897.40, 31,348.84 and 11,037.07 is: 16,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.40 : 31,348.84 = 11,037.07 : x
  2. Step 2: Convert to fraction form
    20,897.40/31,348.84 = 11,037.07/x
  3. Step 3: Cross multiply
    20,897.40x = 31,348.84 × 11,037.07
  4. Step 4: Simplify right side
    20,897.40x = 345,999,341.50
  5. Step 5: Solve for x
    x = 345,999,341.50/20,897.40
  6. Step 6: Final answer
    x = 16,557.05

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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.