Home / 18,637.89-25,720.74-10,140.48

Finding the Fourth Proportional to 18,637.89, 25,720.74 and 10,140.48

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Solution

The fourth proportional to 18,637.89, 25,720.74 and 10,140.48 is: 13,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.89 : 25,720.74 = 10,140.48 : x
  2. Step 2: Convert to fraction form
    18,637.89/25,720.74 = 10,140.48/x
  3. Step 3: Cross multiply
    18,637.89x = 25,720.74 × 10,140.48
  4. Step 4: Simplify right side
    18,637.89x = 260,820,649.56
  5. Step 5: Solve for x
    x = 260,820,649.56/18,637.89
  6. Step 6: Final answer
    x = 13,994.11

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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.