Home / 21,158.94-31,742.60-9,472.26

Finding the Fourth Proportional to 21,158.94, 31,742.60 and 9,472.26

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Solution

The fourth proportional to 21,158.94, 31,742.60 and 9,472.26 is: 14,210.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.94 : 31,742.60 = 9,472.26 : x
  2. Step 2: Convert to fraction form
    21,158.94/31,742.60 = 9,472.26/x
  3. Step 3: Cross multiply
    21,158.94x = 31,742.60 × 9,472.26
  4. Step 4: Simplify right side
    21,158.94x = 300,674,160.28
  5. Step 5: Solve for x
    x = 300,674,160.28/21,158.94
  6. Step 6: Final answer
    x = 14,210.27

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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.