Home / 18,415.10-25,412.83-10,031.60

Finding the Fourth Proportional to 18,415.10, 25,412.83 and 10,031.60

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Solution

The fourth proportional to 18,415.10, 25,412.83 and 10,031.60 is: 13,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.10 : 25,412.83 = 10,031.60 : x
  2. Step 2: Convert to fraction form
    18,415.10/25,412.83 = 10,031.60/x
  3. Step 3: Cross multiply
    18,415.10x = 25,412.83 × 10,031.60
  4. Step 4: Simplify right side
    18,415.10x = 254,931,345.43
  5. Step 5: Solve for x
    x = 254,931,345.43/18,415.10
  6. Step 6: Final answer
    x = 13,843.60

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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.