Home / 13,920.24-19,210.72-8,258.34

Finding the Fourth Proportional to 13,920.24, 19,210.72 and 8,258.34

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Solution

The fourth proportional to 13,920.24, 19,210.72 and 8,258.34 is: 11,396.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.24 : 19,210.72 = 8,258.34 : x
  2. Step 2: Convert to fraction form
    13,920.24/19,210.72 = 8,258.34/x
  3. Step 3: Cross multiply
    13,920.24x = 19,210.72 × 8,258.34
  4. Step 4: Simplify right side
    13,920.24x = 158,648,657.40
  5. Step 5: Solve for x
    x = 158,648,657.40/13,920.24
  6. Step 6: Final answer
    x = 11,396.98

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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.