Home / 13,113.35-19,678.23-5,322.16

Finding the Fourth Proportional to 13,113.35, 19,678.23 and 5,322.16

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Solution

The fourth proportional to 13,113.35, 19,678.23 and 5,322.16 is: 7,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.35 : 19,678.23 = 5,322.16 : x
  2. Step 2: Convert to fraction form
    13,113.35/19,678.23 = 5,322.16/x
  3. Step 3: Cross multiply
    13,113.35x = 19,678.23 × 5,322.16
  4. Step 4: Simplify right side
    13,113.35x = 104,730,688.58
  5. Step 5: Solve for x
    x = 104,730,688.58/13,113.35
  6. Step 6: Final answer
    x = 7,986.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.