Home / 18,629.30-25,699.40-11,070.28

Finding the Fourth Proportional to 18,629.30, 25,699.40 and 11,070.28

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Solution

The fourth proportional to 18,629.30, 25,699.40 and 11,070.28 is: 15,271.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,629.30 : 25,699.40 = 11,070.28 : x
  2. Step 2: Convert to fraction form
    18,629.30/25,699.40 = 11,070.28/x
  3. Step 3: Cross multiply
    18,629.30x = 25,699.40 × 11,070.28
  4. Step 4: Simplify right side
    18,629.30x = 284,499,551.36
  5. Step 5: Solve for x
    x = 284,499,551.36/18,629.30
  6. Step 6: Final answer
    x = 15,271.62

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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.