Home / 13,376.19-18,459.16-7,407.87

Finding the Fourth Proportional to 13,376.19, 18,459.16 and 7,407.87

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Solution

The fourth proportional to 13,376.19, 18,459.16 and 7,407.87 is: 10,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.19 : 18,459.16 = 7,407.87 : x
  2. Step 2: Convert to fraction form
    13,376.19/18,459.16 = 7,407.87/x
  3. Step 3: Cross multiply
    13,376.19x = 18,459.16 × 7,407.87
  4. Step 4: Simplify right side
    13,376.19x = 136,742,969.85
  5. Step 5: Solve for x
    x = 136,742,969.85/13,376.19
  6. Step 6: Final answer
    x = 10,222.86

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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.