Home / 18,831.12-28,111.30-17,464.08

Finding the Fourth Proportional to 18,831.12, 28,111.30 and 17,464.08

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Solution

The fourth proportional to 18,831.12, 28,111.30 and 17,464.08 is: 26,070.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.12 : 28,111.30 = 17,464.08 : x
  2. Step 2: Convert to fraction form
    18,831.12/28,111.30 = 17,464.08/x
  3. Step 3: Cross multiply
    18,831.12x = 28,111.30 × 17,464.08
  4. Step 4: Simplify right side
    18,831.12x = 490,937,992.10
  5. Step 5: Solve for x
    x = 490,937,992.10/18,831.12
  6. Step 6: Final answer
    x = 26,070.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.