Home / 13,485.16-18,618.17-8,707.24

Finding the Fourth Proportional to 13,485.16, 18,618.17 and 8,707.24

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Solution

The fourth proportional to 13,485.16, 18,618.17 and 8,707.24 is: 12,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.16 : 18,618.17 = 8,707.24 : x
  2. Step 2: Convert to fraction form
    13,485.16/18,618.17 = 8,707.24/x
  3. Step 3: Cross multiply
    13,485.16x = 18,618.17 × 8,707.24
  4. Step 4: Simplify right side
    13,485.16x = 162,112,784.47
  5. Step 5: Solve for x
    x = 162,112,784.47/13,485.16
  6. Step 6: Final answer
    x = 12,021.57

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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.