Home / 13,995.09-19,314.32-7,708.59

Finding the Fourth Proportional to 13,995.09, 19,314.32 and 7,708.59

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Solution

The fourth proportional to 13,995.09, 19,314.32 and 7,708.59 is: 10,638.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.09 : 19,314.32 = 7,708.59 : x
  2. Step 2: Convert to fraction form
    13,995.09/19,314.32 = 7,708.59/x
  3. Step 3: Cross multiply
    13,995.09x = 19,314.32 × 7,708.59
  4. Step 4: Simplify right side
    13,995.09x = 148,886,135.47
  5. Step 5: Solve for x
    x = 148,886,135.47/13,995.09
  6. Step 6: Final answer
    x = 10,638.46

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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.