Home / 13,320.48-18,383.16-7,657.08

Finding the Fourth Proportional to 13,320.48, 18,383.16 and 7,657.08

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Solution

The fourth proportional to 13,320.48, 18,383.16 and 7,657.08 is: 10,567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.48 : 18,383.16 = 7,657.08 : x
  2. Step 2: Convert to fraction form
    13,320.48/18,383.16 = 7,657.08/x
  3. Step 3: Cross multiply
    13,320.48x = 18,383.16 × 7,657.08
  4. Step 4: Simplify right side
    13,320.48x = 140,761,326.77
  5. Step 5: Solve for x
    x = 140,761,326.77/13,320.48
  6. Step 6: Final answer
    x = 10,567.29

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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.