Home / 15,111.09-20,860.74-11,590.02

Finding the Fourth Proportional to 15,111.09, 20,860.74 and 11,590.02

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Solution

The fourth proportional to 15,111.09, 20,860.74 and 11,590.02 is: 15,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.09 : 20,860.74 = 11,590.02 : x
  2. Step 2: Convert to fraction form
    15,111.09/20,860.74 = 11,590.02/x
  3. Step 3: Cross multiply
    15,111.09x = 20,860.74 × 11,590.02
  4. Step 4: Simplify right side
    15,111.09x = 241,776,393.81
  5. Step 5: Solve for x
    x = 241,776,393.81/15,111.09
  6. Step 6: Final answer
    x = 15,999.93

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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.