Home / 18,386.48-25,374.73-11,215.75

Finding the Fourth Proportional to 18,386.48, 25,374.73 and 11,215.75

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Solution

The fourth proportional to 18,386.48, 25,374.73 and 11,215.75 is: 15,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.48 : 25,374.73 = 11,215.75 : x
  2. Step 2: Convert to fraction form
    18,386.48/25,374.73 = 11,215.75/x
  3. Step 3: Cross multiply
    18,386.48x = 25,374.73 × 11,215.75
  4. Step 4: Simplify right side
    18,386.48x = 284,596,628.00
  5. Step 5: Solve for x
    x = 284,596,628.00/18,386.48
  6. Step 6: Final answer
    x = 15,478.58

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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.