Home / 12,965.79-19,430.28-9,993

Finding the Fourth Proportional to 12,965.79, 19,430.28 and 9,993

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Solution

The fourth proportional to 12,965.79, 19,430.28 and 9,993 is: 14,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.79 : 19,430.28 = 9,993 : x
  2. Step 2: Convert to fraction form
    12,965.79/19,430.28 = 9,993/x
  3. Step 3: Cross multiply
    12,965.79x = 19,430.28 × 9,993
  4. Step 4: Simplify right side
    12,965.79x = 194,166,788.04
  5. Step 5: Solve for x
    x = 194,166,788.04/12,965.79
  6. Step 6: Final answer
    x = 14,975.31

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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.