Home / 21,164.68-31,761.60-9,490.96

Finding the Fourth Proportional to 21,164.68, 31,761.60 and 9,490.96

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Solution

The fourth proportional to 21,164.68, 31,761.60 and 9,490.96 is: 14,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.68 : 31,761.60 = 9,490.96 : x
  2. Step 2: Convert to fraction form
    21,164.68/31,761.60 = 9,490.96/x
  3. Step 3: Cross multiply
    21,164.68x = 31,761.60 × 9,490.96
  4. Step 4: Simplify right side
    21,164.68x = 301,448,075.14
  5. Step 5: Solve for x
    x = 301,448,075.14/21,164.68
  6. Step 6: Final answer
    x = 14,242.98

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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.