Home / 13,145.74-18,141.27-7,177.48

Finding the Fourth Proportional to 13,145.74, 18,141.27 and 7,177.48

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Solution

The fourth proportional to 13,145.74, 18,141.27 and 7,177.48 is: 9,905.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.74 : 18,141.27 = 7,177.48 : x
  2. Step 2: Convert to fraction form
    13,145.74/18,141.27 = 7,177.48/x
  3. Step 3: Cross multiply
    13,145.74x = 18,141.27 × 7,177.48
  4. Step 4: Simplify right side
    13,145.74x = 130,208,602.60
  5. Step 5: Solve for x
    x = 130,208,602.60/13,145.74
  6. Step 6: Final answer
    x = 9,905.00

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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.