Home / 13,890.24-19,168.50-7,602.60

Finding the Fourth Proportional to 13,890.24, 19,168.50 and 7,602.60

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Solution

The fourth proportional to 13,890.24, 19,168.50 and 7,602.60 is: 10,491.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.24 : 19,168.50 = 7,602.60 : x
  2. Step 2: Convert to fraction form
    13,890.24/19,168.50 = 7,602.60/x
  3. Step 3: Cross multiply
    13,890.24x = 19,168.50 × 7,602.60
  4. Step 4: Simplify right side
    13,890.24x = 145,730,438.10
  5. Step 5: Solve for x
    x = 145,730,438.10/13,890.24
  6. Step 6: Final answer
    x = 10,491.57

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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.