Home / 13,368.36-18,456.72-8,590.44

Finding the Fourth Proportional to 13,368.36, 18,456.72 and 8,590.44

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Solution

The fourth proportional to 13,368.36, 18,456.72 and 8,590.44 is: 11,860.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.36 : 18,456.72 = 8,590.44 : x
  2. Step 2: Convert to fraction form
    13,368.36/18,456.72 = 8,590.44/x
  3. Step 3: Cross multiply
    13,368.36x = 18,456.72 × 8,590.44
  4. Step 4: Simplify right side
    13,368.36x = 158,551,345.76
  5. Step 5: Solve for x
    x = 158,551,345.76/13,368.36
  6. Step 6: Final answer
    x = 11,860.19

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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.