Home / 20,887.40-31,305.18-10,346.06

Finding the Fourth Proportional to 20,887.40, 31,305.18 and 10,346.06

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Solution

The fourth proportional to 20,887.40, 31,305.18 and 10,346.06 is: 15,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.40 : 31,305.18 = 10,346.06 : x
  2. Step 2: Convert to fraction form
    20,887.40/31,305.18 = 10,346.06/x
  3. Step 3: Cross multiply
    20,887.40x = 31,305.18 × 10,346.06
  4. Step 4: Simplify right side
    20,887.40x = 323,885,270.59
  5. Step 5: Solve for x
    x = 323,885,270.59/20,887.40
  6. Step 6: Final answer
    x = 15,506.25

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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.