Home / 13,130.34-18,123.31-7,468.39

Finding the Fourth Proportional to 13,130.34, 18,123.31 and 7,468.39

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Solution

The fourth proportional to 13,130.34, 18,123.31 and 7,468.39 is: 10,308.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.34 : 18,123.31 = 7,468.39 : x
  2. Step 2: Convert to fraction form
    13,130.34/18,123.31 = 7,468.39/x
  3. Step 3: Cross multiply
    13,130.34x = 18,123.31 × 7,468.39
  4. Step 4: Simplify right side
    13,130.34x = 135,351,947.17
  5. Step 5: Solve for x
    x = 135,351,947.17/13,130.34
  6. Step 6: Final answer
    x = 10,308.34

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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.