Home / 13,460.12-18,566.32-8,686.16

Finding the Fourth Proportional to 13,460.12, 18,566.32 and 8,686.16

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Solution

The fourth proportional to 13,460.12, 18,566.32 and 8,686.16 is: 11,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.12 : 18,566.32 = 8,686.16 : x
  2. Step 2: Convert to fraction form
    13,460.12/18,566.32 = 8,686.16/x
  3. Step 3: Cross multiply
    13,460.12x = 18,566.32 × 8,686.16
  4. Step 4: Simplify right side
    13,460.12x = 161,270,026.13
  5. Step 5: Solve for x
    x = 161,270,026.13/13,460.12
  6. Step 6: Final answer
    x = 11,981.32

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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.