Home / 18,727.95-28,061.99-13,116.21

Finding the Fourth Proportional to 18,727.95, 28,061.99 and 13,116.21

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Solution

The fourth proportional to 18,727.95, 28,061.99 and 13,116.21 is: 19,653.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.95 : 28,061.99 = 13,116.21 : x
  2. Step 2: Convert to fraction form
    18,727.95/28,061.99 = 13,116.21/x
  3. Step 3: Cross multiply
    18,727.95x = 28,061.99 × 13,116.21
  4. Step 4: Simplify right side
    18,727.95x = 368,066,832.23
  5. Step 5: Solve for x
    x = 368,066,832.23/18,727.95
  6. Step 6: Final answer
    x = 19,653.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.