Home / 15,376.32-21,222.36-9,003.60

Finding the Fourth Proportional to 15,376.32, 21,222.36 and 9,003.60

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Solution

The fourth proportional to 15,376.32, 21,222.36 and 9,003.60 is: 12,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.32 : 21,222.36 = 9,003.60 : x
  2. Step 2: Convert to fraction form
    15,376.32/21,222.36 = 9,003.60/x
  3. Step 3: Cross multiply
    15,376.32x = 21,222.36 × 9,003.60
  4. Step 4: Simplify right side
    15,376.32x = 191,077,640.50
  5. Step 5: Solve for x
    x = 191,077,640.50/15,376.32
  6. Step 6: Final answer
    x = 12,426.75

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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.