Home / 13,315.29-18,374.98-7,347.01

Finding the Fourth Proportional to 13,315.29, 18,374.98 and 7,347.01

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Solution

The fourth proportional to 13,315.29, 18,374.98 and 7,347.01 is: 10,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.29 : 18,374.98 = 7,347.01 : x
  2. Step 2: Convert to fraction form
    13,315.29/18,374.98 = 7,347.01/x
  3. Step 3: Cross multiply
    13,315.29x = 18,374.98 × 7,347.01
  4. Step 4: Simplify right side
    13,315.29x = 135,001,161.81
  5. Step 5: Solve for x
    x = 135,001,161.81/13,315.29
  6. Step 6: Final answer
    x = 10,138.81

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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.