Home / 18,931.05-26,109.54-18,165.60

Finding the Fourth Proportional to 18,931.05, 26,109.54 and 18,165.60

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Solution

The fourth proportional to 18,931.05, 26,109.54 and 18,165.60 is: 25,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.05 : 26,109.54 = 18,165.60 : x
  2. Step 2: Convert to fraction form
    18,931.05/26,109.54 = 18,165.60/x
  3. Step 3: Cross multiply
    18,931.05x = 26,109.54 × 18,165.60
  4. Step 4: Simplify right side
    18,931.05x = 474,295,459.82
  5. Step 5: Solve for x
    x = 474,295,459.82/18,931.05
  6. Step 6: Final answer
    x = 25,053.84

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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.