Home / 10,742.07-14,831.29-8,219.68

Finding the Fourth Proportional to 10,742.07, 14,831.29 and 8,219.68

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Solution

The fourth proportional to 10,742.07, 14,831.29 and 8,219.68 is: 11,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.07 : 14,831.29 = 8,219.68 : x
  2. Step 2: Convert to fraction form
    10,742.07/14,831.29 = 8,219.68/x
  3. Step 3: Cross multiply
    10,742.07x = 14,831.29 × 8,219.68
  4. Step 4: Simplify right side
    10,742.07x = 121,908,457.79
  5. Step 5: Solve for x
    x = 121,908,457.79/10,742.07
  6. Step 6: Final answer
    x = 11,348.69

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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.