Home / 13,927.22-19,219.67-7,639.59

Finding the Fourth Proportional to 13,927.22, 19,219.67 and 7,639.59

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Solution

The fourth proportional to 13,927.22, 19,219.67 and 7,639.59 is: 10,542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.22 : 19,219.67 = 7,639.59 : x
  2. Step 2: Convert to fraction form
    13,927.22/19,219.67 = 7,639.59/x
  3. Step 3: Cross multiply
    13,927.22x = 19,219.67 × 7,639.59
  4. Step 4: Simplify right side
    13,927.22x = 146,830,461.26
  5. Step 5: Solve for x
    x = 146,830,461.26/13,927.22
  6. Step 6: Final answer
    x = 10,542.70

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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.