Home / 13,955.18-19,259.22-7,988.72

Finding the Fourth Proportional to 13,955.18, 19,259.22 and 7,988.72

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Solution

The fourth proportional to 13,955.18, 19,259.22 and 7,988.72 is: 11,025.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.18 : 19,259.22 = 7,988.72 : x
  2. Step 2: Convert to fraction form
    13,955.18/19,259.22 = 7,988.72/x
  3. Step 3: Cross multiply
    13,955.18x = 19,259.22 × 7,988.72
  4. Step 4: Simplify right side
    13,955.18x = 153,856,516.00
  5. Step 5: Solve for x
    x = 153,856,516.00/13,955.18
  6. Step 6: Final answer
    x = 11,025.05

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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.