Home / 12,985.34-17,919.72-7,016.99

Finding the Fourth Proportional to 12,985.34, 17,919.72 and 7,016.99

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Solution

The fourth proportional to 12,985.34, 17,919.72 and 7,016.99 is: 9,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.34 : 17,919.72 = 7,016.99 : x
  2. Step 2: Convert to fraction form
    12,985.34/17,919.72 = 7,016.99/x
  3. Step 3: Cross multiply
    12,985.34x = 17,919.72 × 7,016.99
  4. Step 4: Simplify right side
    12,985.34x = 125,742,406.44
  5. Step 5: Solve for x
    x = 125,742,406.44/12,985.34
  6. Step 6: Final answer
    x = 9,683.42

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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.