Home / 18,528.60-27,779.40-7,429.80

Finding the Fourth Proportional to 18,528.60, 27,779.40 and 7,429.80

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Solution

The fourth proportional to 18,528.60, 27,779.40 and 7,429.80 is: 11,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,528.60 : 27,779.40 = 7,429.80 : x
  2. Step 2: Convert to fraction form
    18,528.60/27,779.40 = 7,429.80/x
  3. Step 3: Cross multiply
    18,528.60x = 27,779.40 × 7,429.80
  4. Step 4: Simplify right side
    18,528.60x = 206,395,386.12
  5. Step 5: Solve for x
    x = 206,395,386.12/18,528.60
  6. Step 6: Final answer
    x = 11,139.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.