Home / 15,693.85-21,656.86-10,020.61

Finding the Fourth Proportional to 15,693.85, 21,656.86 and 10,020.61

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Solution

The fourth proportional to 15,693.85, 21,656.86 and 10,020.61 is: 13,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.85 : 21,656.86 = 10,020.61 : x
  2. Step 2: Convert to fraction form
    15,693.85/21,656.86 = 10,020.61/x
  3. Step 3: Cross multiply
    15,693.85x = 21,656.86 × 10,020.61
  4. Step 4: Simplify right side
    15,693.85x = 217,014,947.88
  5. Step 5: Solve for x
    x = 217,014,947.88/15,693.85
  6. Step 6: Final answer
    x = 13,828.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.