Home / 15,369.32-21,210.15-8,996.54

Finding the Fourth Proportional to 15,369.32, 21,210.15 and 8,996.54

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Solution

The fourth proportional to 15,369.32, 21,210.15 and 8,996.54 is: 12,415.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.32 : 21,210.15 = 8,996.54 : x
  2. Step 2: Convert to fraction form
    15,369.32/21,210.15 = 8,996.54/x
  3. Step 3: Cross multiply
    15,369.32x = 21,210.15 × 8,996.54
  4. Step 4: Simplify right side
    15,369.32x = 190,817,962.88
  5. Step 5: Solve for x
    x = 190,817,962.88/15,369.32
  6. Step 6: Final answer
    x = 12,415.51

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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.