Home / 21,001.92-31,509.57-6,210.92

Finding the Fourth Proportional to 21,001.92, 31,509.57 and 6,210.92

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Solution

The fourth proportional to 21,001.92, 31,509.57 and 6,210.92 is: 9,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.92 : 31,509.57 = 6,210.92 : x
  2. Step 2: Convert to fraction form
    21,001.92/31,509.57 = 6,210.92/x
  3. Step 3: Cross multiply
    21,001.92x = 31,509.57 × 6,210.92
  4. Step 4: Simplify right side
    21,001.92x = 195,703,260.96
  5. Step 5: Solve for x
    x = 195,703,260.96/21,001.92
  6. Step 6: Final answer
    x = 9,318.35

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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.