Home / 13,930.88-19,224.95-7,643.25

Finding the Fourth Proportional to 13,930.88, 19,224.95 and 7,643.25

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Solution

The fourth proportional to 13,930.88, 19,224.95 and 7,643.25 is: 10,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.88 : 19,224.95 = 7,643.25 : x
  2. Step 2: Convert to fraction form
    13,930.88/19,224.95 = 7,643.25/x
  3. Step 3: Cross multiply
    13,930.88x = 19,224.95 × 7,643.25
  4. Step 4: Simplify right side
    13,930.88x = 146,941,060.87
  5. Step 5: Solve for x
    x = 146,941,060.87/13,930.88
  6. Step 6: Final answer
    x = 10,547.87

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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.