Home / 18,638.02-25,720.89-10,140.62

Finding the Fourth Proportional to 18,638.02, 25,720.89 and 10,140.62

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Solution

The fourth proportional to 18,638.02, 25,720.89 and 10,140.62 is: 13,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.02 : 25,720.89 = 10,140.62 : x
  2. Step 2: Convert to fraction form
    18,638.02/25,720.89 = 10,140.62/x
  3. Step 3: Cross multiply
    18,638.02x = 25,720.89 × 10,140.62
  4. Step 4: Simplify right side
    18,638.02x = 260,825,771.55
  5. Step 5: Solve for x
    x = 260,825,771.55/18,638.02
  6. Step 6: Final answer
    x = 13,994.29

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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.