Home / 13,272.28-18,315.28-7,303.90

Finding the Fourth Proportional to 13,272.28, 18,315.28 and 7,303.90

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Solution

The fourth proportional to 13,272.28, 18,315.28 and 7,303.90 is: 10,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.28 : 18,315.28 = 7,303.90 : x
  2. Step 2: Convert to fraction form
    13,272.28/18,315.28 = 7,303.90/x
  3. Step 3: Cross multiply
    13,272.28x = 18,315.28 × 7,303.90
  4. Step 4: Simplify right side
    13,272.28x = 133,772,973.59
  5. Step 5: Solve for x
    x = 133,772,973.59/13,272.28
  6. Step 6: Final answer
    x = 10,079.13

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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.