Home / 20,835.32-31,262.70-10,318.28

Finding the Fourth Proportional to 20,835.32, 31,262.70 and 10,318.28

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Solution

The fourth proportional to 20,835.32, 31,262.70 and 10,318.28 is: 15,482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.32 : 31,262.70 = 10,318.28 : x
  2. Step 2: Convert to fraction form
    20,835.32/31,262.70 = 10,318.28/x
  3. Step 3: Cross multiply
    20,835.32x = 31,262.70 × 10,318.28
  4. Step 4: Simplify right side
    20,835.32x = 322,577,292.16
  5. Step 5: Solve for x
    x = 322,577,292.16/20,835.32
  6. Step 6: Final answer
    x = 15,482.23

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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.