Home / 15,628.86-21,567.78-8,555.22

Finding the Fourth Proportional to 15,628.86, 21,567.78 and 8,555.22

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Solution

The fourth proportional to 15,628.86, 21,567.78 and 8,555.22 is: 11,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.86 : 21,567.78 = 8,555.22 : x
  2. Step 2: Convert to fraction form
    15,628.86/21,567.78 = 8,555.22/x
  3. Step 3: Cross multiply
    15,628.86x = 21,567.78 × 8,555.22
  4. Step 4: Simplify right side
    15,628.86x = 184,517,102.81
  5. Step 5: Solve for x
    x = 184,517,102.81/15,628.86
  6. Step 6: Final answer
    x = 11,806.18

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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.