Home / 15,289.23-21,090.18-9,615

Finding the Fourth Proportional to 15,289.23, 21,090.18 and 9,615

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Solution

The fourth proportional to 15,289.23, 21,090.18 and 9,615 is: 13,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.23 : 21,090.18 = 9,615 : x
  2. Step 2: Convert to fraction form
    15,289.23/21,090.18 = 9,615/x
  3. Step 3: Cross multiply
    15,289.23x = 21,090.18 × 9,615
  4. Step 4: Simplify right side
    15,289.23x = 202,782,080.70
  5. Step 5: Solve for x
    x = 202,782,080.70/15,289.23
  6. Step 6: Final answer
    x = 13,263.07

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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.