Home / 13,124.77-18,112.37-7,156.44

Finding the Fourth Proportional to 13,124.77, 18,112.37 and 7,156.44

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Solution

The fourth proportional to 13,124.77, 18,112.37 and 7,156.44 is: 9,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.77 : 18,112.37 = 7,156.44 : x
  2. Step 2: Convert to fraction form
    13,124.77/18,112.37 = 7,156.44/x
  3. Step 3: Cross multiply
    13,124.77x = 18,112.37 × 7,156.44
  4. Step 4: Simplify right side
    13,124.77x = 129,620,089.16
  5. Step 5: Solve for x
    x = 129,620,089.16/13,124.77
  6. Step 6: Final answer
    x = 9,875.99

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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.