Home / 19,219.60-28,852.80-10,905.40

Finding the Fourth Proportional to 19,219.60, 28,852.80 and 10,905.40

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Solution

The fourth proportional to 19,219.60, 28,852.80 and 10,905.40 is: 16,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.60 : 28,852.80 = 10,905.40 : x
  2. Step 2: Convert to fraction form
    19,219.60/28,852.80 = 10,905.40/x
  3. Step 3: Cross multiply
    19,219.60x = 28,852.80 × 10,905.40
  4. Step 4: Simplify right side
    19,219.60x = 314,651,325.12
  5. Step 5: Solve for x
    x = 314,651,325.12/19,219.60
  6. Step 6: Final answer
    x = 16,371.38

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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.