Home / 13,460.13-18,579.17-9,209.59

Finding the Fourth Proportional to 13,460.13, 18,579.17 and 9,209.59

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Solution

The fourth proportional to 13,460.13, 18,579.17 and 9,209.59 is: 12,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.13 : 18,579.17 = 9,209.59 : x
  2. Step 2: Convert to fraction form
    13,460.13/18,579.17 = 9,209.59/x
  3. Step 3: Cross multiply
    13,460.13x = 18,579.17 × 9,209.59
  4. Step 4: Simplify right side
    13,460.13x = 171,106,538.24
  5. Step 5: Solve for x
    x = 171,106,538.24/13,460.13
  6. Step 6: Final answer
    x = 12,712.10

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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.