Home / 13,831.34-19,088.87-7,863.91

Finding the Fourth Proportional to 13,831.34, 19,088.87 and 7,863.91

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Solution

The fourth proportional to 13,831.34, 19,088.87 and 7,863.91 is: 10,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.34 : 19,088.87 = 7,863.91 : x
  2. Step 2: Convert to fraction form
    13,831.34/19,088.87 = 7,863.91/x
  3. Step 3: Cross multiply
    13,831.34x = 19,088.87 × 7,863.91
  4. Step 4: Simplify right side
    13,831.34x = 150,113,068.64
  5. Step 5: Solve for x
    x = 150,113,068.64/13,831.34
  6. Step 6: Final answer
    x = 10,853.11

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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.