Home / 19,328.64-26,664.72-13,663.68

Finding the Fourth Proportional to 19,328.64, 26,664.72 and 13,663.68

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Solution

The fourth proportional to 19,328.64, 26,664.72 and 13,663.68 is: 18,849.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.64 : 26,664.72 = 13,663.68 : x
  2. Step 2: Convert to fraction form
    19,328.64/26,664.72 = 13,663.68/x
  3. Step 3: Cross multiply
    19,328.64x = 26,664.72 × 13,663.68
  4. Step 4: Simplify right side
    19,328.64x = 364,338,201.37
  5. Step 5: Solve for x
    x = 364,338,201.37/19,328.64
  6. Step 6: Final answer
    x = 18,849.66

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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.