Home / 13,315.48-18,376.40-7,347.68

Finding the Fourth Proportional to 13,315.48, 18,376.40 and 7,347.68

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Solution

The fourth proportional to 13,315.48, 18,376.40 and 7,347.68 is: 10,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.48 : 18,376.40 = 7,347.68 : x
  2. Step 2: Convert to fraction form
    13,315.48/18,376.40 = 7,347.68/x
  3. Step 3: Cross multiply
    13,315.48x = 18,376.40 × 7,347.68
  4. Step 4: Simplify right side
    13,315.48x = 135,023,906.75
  5. Step 5: Solve for x
    x = 135,023,906.75/13,315.48
  6. Step 6: Final answer
    x = 10,140.37

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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.