Home / 13,290.15-19,935.95-4,972.35

Finding the Fourth Proportional to 13,290.15, 19,935.95 and 4,972.35

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Solution

The fourth proportional to 13,290.15, 19,935.95 and 4,972.35 is: 7,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.15 : 19,935.95 = 4,972.35 : x
  2. Step 2: Convert to fraction form
    13,290.15/19,935.95 = 4,972.35/x
  3. Step 3: Cross multiply
    13,290.15x = 19,935.95 × 4,972.35
  4. Step 4: Simplify right side
    13,290.15x = 99,128,496.12
  5. Step 5: Solve for x
    x = 99,128,496.12/13,290.15
  6. Step 6: Final answer
    x = 7,458.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.