Home / 13,280.26-18,326.40-7,615.96

Finding the Fourth Proportional to 13,280.26, 18,326.40 and 7,615.96

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Solution

The fourth proportional to 13,280.26, 18,326.40 and 7,615.96 is: 10,509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.26 : 18,326.40 = 7,615.96 : x
  2. Step 2: Convert to fraction form
    13,280.26/18,326.40 = 7,615.96/x
  3. Step 3: Cross multiply
    13,280.26x = 18,326.40 × 7,615.96
  4. Step 4: Simplify right side
    13,280.26x = 139,573,129.34
  5. Step 5: Solve for x
    x = 139,573,129.34/13,280.26
  6. Step 6: Final answer
    x = 10,509.82

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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.