Home / 18,415.04-25,412.80-10,031.60

Finding the Fourth Proportional to 18,415.04, 25,412.80 and 10,031.60

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Solution

The fourth proportional to 18,415.04, 25,412.80 and 10,031.60 is: 13,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.04 : 25,412.80 = 10,031.60 : x
  2. Step 2: Convert to fraction form
    18,415.04/25,412.80 = 10,031.60/x
  3. Step 3: Cross multiply
    18,415.04x = 25,412.80 × 10,031.60
  4. Step 4: Simplify right side
    18,415.04x = 254,931,044.48
  5. Step 5: Solve for x
    x = 254,931,044.48/18,415.04
  6. Step 6: Final answer
    x = 13,843.63

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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.