Home / 13,368.72-18,451.08-7,782.96

Finding the Fourth Proportional to 13,368.72, 18,451.08 and 7,782.96

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Solution

The fourth proportional to 13,368.72, 18,451.08 and 7,782.96 is: 10,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.72 : 18,451.08 = 7,782.96 : x
  2. Step 2: Convert to fraction form
    13,368.72/18,451.08 = 7,782.96/x
  3. Step 3: Cross multiply
    13,368.72x = 18,451.08 × 7,782.96
  4. Step 4: Simplify right side
    13,368.72x = 143,604,017.60
  5. Step 5: Solve for x
    x = 143,604,017.60/13,368.72
  6. Step 6: Final answer
    x = 10,741.79

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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.