Home / 9,399.58-14,016.40-9,315.20

Finding the Fourth Proportional to 9,399.58, 14,016.40 and 9,315.20

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Solution

The fourth proportional to 9,399.58, 14,016.40 and 9,315.20 is: 13,890.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.58 : 14,016.40 = 9,315.20 : x
  2. Step 2: Convert to fraction form
    9,399.58/14,016.40 = 9,315.20/x
  3. Step 3: Cross multiply
    9,399.58x = 14,016.40 × 9,315.20
  4. Step 4: Simplify right side
    9,399.58x = 130,565,581.03
  5. Step 5: Solve for x
    x = 130,565,581.03/9,399.58
  6. Step 6: Final answer
    x = 13,890.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.