Home / 13,111.51-19,655.37-6,539.71

Finding the Fourth Proportional to 13,111.51, 19,655.37 and 6,539.71

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Solution

The fourth proportional to 13,111.51, 19,655.37 and 6,539.71 is: 9,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.51 : 19,655.37 = 6,539.71 : x
  2. Step 2: Convert to fraction form
    13,111.51/19,655.37 = 6,539.71/x
  3. Step 3: Cross multiply
    13,111.51x = 19,655.37 × 6,539.71
  4. Step 4: Simplify right side
    13,111.51x = 128,540,419.74
  5. Step 5: Solve for x
    x = 128,540,419.74/13,111.51
  6. Step 6: Final answer
    x = 9,803.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.