Home / 10,130.32-15,276.49-9,991.72

Finding the Fourth Proportional to 10,130.32, 15,276.49 and 9,991.72

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Solution

The fourth proportional to 10,130.32, 15,276.49 and 9,991.72 is: 15,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.32 : 15,276.49 = 9,991.72 : x
  2. Step 2: Convert to fraction form
    10,130.32/15,276.49 = 9,991.72/x
  3. Step 3: Cross multiply
    10,130.32x = 15,276.49 × 9,991.72
  4. Step 4: Simplify right side
    10,130.32x = 152,638,410.66
  5. Step 5: Solve for x
    x = 152,638,410.66/10,130.32
  6. Step 6: Final answer
    x = 15,067.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.