Home / 13,666.19-18,858.65-7,613.67

Finding the Fourth Proportional to 13,666.19, 18,858.65 and 7,613.67

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Solution

The fourth proportional to 13,666.19, 18,858.65 and 7,613.67 is: 10,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.19 : 18,858.65 = 7,613.67 : x
  2. Step 2: Convert to fraction form
    13,666.19/18,858.65 = 7,613.67/x
  3. Step 3: Cross multiply
    13,666.19x = 18,858.65 × 7,613.67
  4. Step 4: Simplify right side
    13,666.19x = 143,583,538.77
  5. Step 5: Solve for x
    x = 143,583,538.77/13,666.19
  6. Step 6: Final answer
    x = 10,506.48

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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.