Home / 15,724.10-21,698.88-9,009.74

Finding the Fourth Proportional to 15,724.10, 21,698.88 and 9,009.74

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Solution

The fourth proportional to 15,724.10, 21,698.88 and 9,009.74 is: 12,433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.10 : 21,698.88 = 9,009.74 : x
  2. Step 2: Convert to fraction form
    15,724.10/21,698.88 = 9,009.74/x
  3. Step 3: Cross multiply
    15,724.10x = 21,698.88 × 9,009.74
  4. Step 4: Simplify right side
    15,724.10x = 195,501,267.09
  5. Step 5: Solve for x
    x = 195,501,267.09/15,724.10
  6. Step 6: Final answer
    x = 12,433.22

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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.