Home / 13,955.68-19,259.91-7,989.22

Finding the Fourth Proportional to 13,955.68, 19,259.91 and 7,989.22

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Solution

The fourth proportional to 13,955.68, 19,259.91 and 7,989.22 is: 11,025.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.68 : 19,259.91 = 7,989.22 : x
  2. Step 2: Convert to fraction form
    13,955.68/19,259.91 = 7,989.22/x
  3. Step 3: Cross multiply
    13,955.68x = 19,259.91 × 7,989.22
  4. Step 4: Simplify right side
    13,955.68x = 153,871,658.17
  5. Step 5: Solve for x
    x = 153,871,658.17/13,955.68
  6. Step 6: Final answer
    x = 11,025.74

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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.