Home / 13,820.40-19,072.08-7,532.72

Finding the Fourth Proportional to 13,820.40, 19,072.08 and 7,532.72

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Solution

The fourth proportional to 13,820.40, 19,072.08 and 7,532.72 is: 10,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.40 : 19,072.08 = 7,532.72 : x
  2. Step 2: Convert to fraction form
    13,820.40/19,072.08 = 7,532.72/x
  3. Step 3: Cross multiply
    13,820.40x = 19,072.08 × 7,532.72
  4. Step 4: Simplify right side
    13,820.40x = 143,664,638.46
  5. Step 5: Solve for x
    x = 143,664,638.46/13,820.40
  6. Step 6: Final answer
    x = 10,395.11

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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.