Home / 12,888.24-17,779.32-8,165.04

Finding the Fourth Proportional to 12,888.24, 17,779.32 and 8,165.04

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Solution

The fourth proportional to 12,888.24, 17,779.32 and 8,165.04 is: 11,263.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.24 : 17,779.32 = 8,165.04 : x
  2. Step 2: Convert to fraction form
    12,888.24/17,779.32 = 8,165.04/x
  3. Step 3: Cross multiply
    12,888.24x = 17,779.32 × 8,165.04
  4. Step 4: Simplify right side
    12,888.24x = 145,168,858.97
  5. Step 5: Solve for x
    x = 145,168,858.97/12,888.24
  6. Step 6: Final answer
    x = 11,263.67

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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.