Home / 13,856.73-19,122.31-7,888.40

Finding the Fourth Proportional to 13,856.73, 19,122.31 and 7,888.40

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Solution

The fourth proportional to 13,856.73, 19,122.31 and 7,888.40 is: 10,886.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.73 : 19,122.31 = 7,888.40 : x
  2. Step 2: Convert to fraction form
    13,856.73/19,122.31 = 7,888.40/x
  3. Step 3: Cross multiply
    13,856.73x = 19,122.31 × 7,888.40
  4. Step 4: Simplify right side
    13,856.73x = 150,844,430.20
  5. Step 5: Solve for x
    x = 150,844,430.20/13,856.73
  6. Step 6: Final answer
    x = 10,886.00

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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.