Home / 18,271.19-25,214.43-10,721.99

Finding the Fourth Proportional to 18,271.19, 25,214.43 and 10,721.99

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Solution

The fourth proportional to 18,271.19, 25,214.43 and 10,721.99 is: 14,796.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.19 : 25,214.43 = 10,721.99 : x
  2. Step 2: Convert to fraction form
    18,271.19/25,214.43 = 10,721.99/x
  3. Step 3: Cross multiply
    18,271.19x = 25,214.43 × 10,721.99
  4. Step 4: Simplify right side
    18,271.19x = 270,348,740.24
  5. Step 5: Solve for x
    x = 270,348,740.24/18,271.19
  6. Step 6: Final answer
    x = 14,796.45

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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.