Home / 20,970.54-31,436.34-11,101.50

Finding the Fourth Proportional to 20,970.54, 31,436.34 and 11,101.50

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Solution

The fourth proportional to 20,970.54, 31,436.34 and 11,101.50 is: 16,641.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.54 : 31,436.34 = 11,101.50 : x
  2. Step 2: Convert to fraction form
    20,970.54/31,436.34 = 11,101.50/x
  3. Step 3: Cross multiply
    20,970.54x = 31,436.34 × 11,101.50
  4. Step 4: Simplify right side
    20,970.54x = 348,990,528.51
  5. Step 5: Solve for x
    x = 348,990,528.51/20,970.54
  6. Step 6: Final answer
    x = 16,641.94

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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.