Home / 15,210.90-20,994.57-9,896.49

Finding the Fourth Proportional to 15,210.90, 20,994.57 and 9,896.49

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Solution

The fourth proportional to 15,210.90, 20,994.57 and 9,896.49 is: 13,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.90 : 20,994.57 = 9,896.49 : x
  2. Step 2: Convert to fraction form
    15,210.90/20,994.57 = 9,896.49/x
  3. Step 3: Cross multiply
    15,210.90x = 20,994.57 × 9,896.49
  4. Step 4: Simplify right side
    15,210.90x = 207,772,552.06
  5. Step 5: Solve for x
    x = 207,772,552.06/15,210.90
  6. Step 6: Final answer
    x = 13,659.45

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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.