Home / 13,122.95-18,112.59-8,341.95

Finding the Fourth Proportional to 13,122.95, 18,112.59 and 8,341.95

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Solution

The fourth proportional to 13,122.95, 18,112.59 and 8,341.95 is: 11,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.95 : 18,112.59 = 8,341.95 : x
  2. Step 2: Convert to fraction form
    13,122.95/18,112.59 = 8,341.95/x
  3. Step 3: Cross multiply
    13,122.95x = 18,112.59 × 8,341.95
  4. Step 4: Simplify right side
    13,122.95x = 151,094,388.07
  5. Step 5: Solve for x
    x = 151,094,388.07/13,122.95
  6. Step 6: Final answer
    x = 11,513.76

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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.