Home / 13,291.76-18,342.79-7,323.28

Finding the Fourth Proportional to 13,291.76, 18,342.79 and 7,323.28

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Solution

The fourth proportional to 13,291.76, 18,342.79 and 7,323.28 is: 10,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.76 : 18,342.79 = 7,323.28 : x
  2. Step 2: Convert to fraction form
    13,291.76/18,342.79 = 7,323.28/x
  3. Step 3: Cross multiply
    13,291.76x = 18,342.79 × 7,323.28
  4. Step 4: Simplify right side
    13,291.76x = 134,329,322.99
  5. Step 5: Solve for x
    x = 134,329,322.99/13,291.76
  6. Step 6: Final answer
    x = 10,106.21

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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.