Home / 19,139.36-26,412.85-11,587.05

Finding the Fourth Proportional to 19,139.36, 26,412.85 and 11,587.05

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Solution

The fourth proportional to 19,139.36, 26,412.85 and 11,587.05 is: 15,990.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.36 : 26,412.85 = 11,587.05 : x
  2. Step 2: Convert to fraction form
    19,139.36/26,412.85 = 11,587.05/x
  3. Step 3: Cross multiply
    19,139.36x = 26,412.85 × 11,587.05
  4. Step 4: Simplify right side
    19,139.36x = 306,047,028.08
  5. Step 5: Solve for x
    x = 306,047,028.08/19,139.36
  6. Step 6: Final answer
    x = 15,990.46

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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.