Home / 13,437.60-18,536.81-7,983.56

Finding the Fourth Proportional to 13,437.60, 18,536.81 and 7,983.56

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Solution

The fourth proportional to 13,437.60, 18,536.81 and 7,983.56 is: 11,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.60 : 18,536.81 = 7,983.56 : x
  2. Step 2: Convert to fraction form
    13,437.60/18,536.81 = 7,983.56/x
  3. Step 3: Cross multiply
    13,437.60x = 18,536.81 × 7,983.56
  4. Step 4: Simplify right side
    13,437.60x = 147,989,602.24
  5. Step 5: Solve for x
    x = 147,989,602.24/13,437.60
  6. Step 6: Final answer
    x = 11,013.10

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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.