Home / 13,280.24-18,326.88-7,312.46

Finding the Fourth Proportional to 13,280.24, 18,326.88 and 7,312.46

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Solution

The fourth proportional to 13,280.24, 18,326.88 and 7,312.46 is: 10,091.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.24 : 18,326.88 = 7,312.46 : x
  2. Step 2: Convert to fraction form
    13,280.24/18,326.88 = 7,312.46/x
  3. Step 3: Cross multiply
    13,280.24x = 18,326.88 × 7,312.46
  4. Step 4: Simplify right side
    13,280.24x = 134,014,485.29
  5. Step 5: Solve for x
    x = 134,014,485.29/13,280.24
  6. Step 6: Final answer
    x = 10,091.27

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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.