Home / 10,347.22-14,278.80-5,631.40

Finding the Fourth Proportional to 10,347.22, 14,278.80 and 5,631.40

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Solution

The fourth proportional to 10,347.22, 14,278.80 and 5,631.40 is: 7,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,347.22 : 14,278.80 = 5,631.40 : x
  2. Step 2: Convert to fraction form
    10,347.22/14,278.80 = 5,631.40/x
  3. Step 3: Cross multiply
    10,347.22x = 14,278.80 × 5,631.40
  4. Step 4: Simplify right side
    10,347.22x = 80,409,634.32
  5. Step 5: Solve for x
    x = 80,409,634.32/10,347.22
  6. Step 6: Final answer
    x = 7,771.13

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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.