Home / 19,113.60-28,670.40-13,208.70

Finding the Fourth Proportional to 19,113.60, 28,670.40 and 13,208.70

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Solution

The fourth proportional to 19,113.60, 28,670.40 and 13,208.70 is: 19,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.60 : 28,670.40 = 13,208.70 : x
  2. Step 2: Convert to fraction form
    19,113.60/28,670.40 = 13,208.70/x
  3. Step 3: Cross multiply
    19,113.60x = 28,670.40 × 13,208.70
  4. Step 4: Simplify right side
    19,113.60x = 378,698,712.48
  5. Step 5: Solve for x
    x = 378,698,712.48/19,113.60
  6. Step 6: Final answer
    x = 19,813.05

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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.