Home / 19,862.10-27,409.68-11,478.60

Finding the Fourth Proportional to 19,862.10, 27,409.68 and 11,478.60

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Solution

The fourth proportional to 19,862.10, 27,409.68 and 11,478.60 is: 15,840.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,862.10 : 27,409.68 = 11,478.60 : x
  2. Step 2: Convert to fraction form
    19,862.10/27,409.68 = 11,478.60/x
  3. Step 3: Cross multiply
    19,862.10x = 27,409.68 × 11,478.60
  4. Step 4: Simplify right side
    19,862.10x = 314,624,752.85
  5. Step 5: Solve for x
    x = 314,624,752.85/19,862.10
  6. Step 6: Final answer
    x = 15,840.46

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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.