Home / 18,459.90-25,461.54-11,388.60

Finding the Fourth Proportional to 18,459.90, 25,461.54 and 11,388.60

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Solution

The fourth proportional to 18,459.90, 25,461.54 and 11,388.60 is: 15,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.90 : 25,461.54 = 11,388.60 : x
  2. Step 2: Convert to fraction form
    18,459.90/25,461.54 = 11,388.60/x
  3. Step 3: Cross multiply
    18,459.90x = 25,461.54 × 11,388.60
  4. Step 4: Simplify right side
    18,459.90x = 289,971,294.44
  5. Step 5: Solve for x
    x = 289,971,294.44/18,459.90
  6. Step 6: Final answer
    x = 15,708.17

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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.