Home / 13,582.36-18,744.96-7,615

Finding the Fourth Proportional to 13,582.36, 18,744.96 and 7,615

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Solution

The fourth proportional to 13,582.36, 18,744.96 and 7,615 is: 10,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.36 : 18,744.96 = 7,615 : x
  2. Step 2: Convert to fraction form
    13,582.36/18,744.96 = 7,615/x
  3. Step 3: Cross multiply
    13,582.36x = 18,744.96 × 7,615
  4. Step 4: Simplify right side
    13,582.36x = 142,742,870.40
  5. Step 5: Solve for x
    x = 142,742,870.40/13,582.36
  6. Step 6: Final answer
    x = 10,509.43

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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.