Home / 15,904.99-21,948.89-8,831.41

Finding the Fourth Proportional to 15,904.99, 21,948.89 and 8,831.41

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Solution

The fourth proportional to 15,904.99, 21,948.89 and 8,831.41 is: 12,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.99 : 21,948.89 = 8,831.41 : x
  2. Step 2: Convert to fraction form
    15,904.99/21,948.89 = 8,831.41/x
  3. Step 3: Cross multiply
    15,904.99x = 21,948.89 × 8,831.41
  4. Step 4: Simplify right side
    15,904.99x = 193,839,547.61
  5. Step 5: Solve for x
    x = 193,839,547.61/15,904.99
  6. Step 6: Final answer
    x = 12,187.34

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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.