Home / 13,412.08-18,508.59-7,746.75

Finding the Fourth Proportional to 13,412.08, 18,508.59 and 7,746.75

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Solution

The fourth proportional to 13,412.08, 18,508.59 and 7,746.75 is: 10,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.08 : 18,508.59 = 7,746.75 : x
  2. Step 2: Convert to fraction form
    13,412.08/18,508.59 = 7,746.75/x
  3. Step 3: Cross multiply
    13,412.08x = 18,508.59 × 7,746.75
  4. Step 4: Simplify right side
    13,412.08x = 143,381,419.58
  5. Step 5: Solve for x
    x = 143,381,419.58/13,412.08
  6. Step 6: Final answer
    x = 10,690.47

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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.