Home / 13,278.90-19,929.70-7,043.26

Finding the Fourth Proportional to 13,278.90, 19,929.70 and 7,043.26

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Solution

The fourth proportional to 13,278.90, 19,929.70 and 7,043.26 is: 10,570.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.90 : 19,929.70 = 7,043.26 : x
  2. Step 2: Convert to fraction form
    13,278.90/19,929.70 = 7,043.26/x
  3. Step 3: Cross multiply
    13,278.90x = 19,929.70 × 7,043.26
  4. Step 4: Simplify right side
    13,278.90x = 140,370,058.82
  5. Step 5: Solve for x
    x = 140,370,058.82/13,278.90
  6. Step 6: Final answer
    x = 10,570.91

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1.5x scale

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.