Home / 13,995.32-20,987.51-5,225.45

Finding the Fourth Proportional to 13,995.32, 20,987.51 and 5,225.45

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Solution

The fourth proportional to 13,995.32, 20,987.51 and 5,225.45 is: 7,836.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.32 : 20,987.51 = 5,225.45 : x
  2. Step 2: Convert to fraction form
    13,995.32/20,987.51 = 5,225.45/x
  3. Step 3: Cross multiply
    13,995.32x = 20,987.51 × 5,225.45
  4. Step 4: Simplify right side
    13,995.32x = 109,669,053.06
  5. Step 5: Solve for x
    x = 109,669,053.06/13,995.32
  6. Step 6: Final answer
    x = 7,836.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.