Home / 11,146.85-15,381.75-6,430.22

Finding the Fourth Proportional to 11,146.85, 15,381.75 and 6,430.22

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Solution

The fourth proportional to 11,146.85, 15,381.75 and 6,430.22 is: 8,873.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.85 : 15,381.75 = 6,430.22 : x
  2. Step 2: Convert to fraction form
    11,146.85/15,381.75 = 6,430.22/x
  3. Step 3: Cross multiply
    11,146.85x = 15,381.75 × 6,430.22
  4. Step 4: Simplify right side
    11,146.85x = 98,908,041.37
  5. Step 5: Solve for x
    x = 98,908,041.37/11,146.85
  6. Step 6: Final answer
    x = 8,873.18

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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.