Home / 43,278.70-64,905.90-13,705.60

Finding the Fourth Proportional to 43,278.70, 64,905.90 and 13,705.60

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Solution

The fourth proportional to 43,278.70, 64,905.90 and 13,705.60 is: 20,554.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.70 : 64,905.90 = 13,705.60 : x
  2. Step 2: Convert to fraction form
    43,278.70/64,905.90 = 13,705.60/x
  3. Step 3: Cross multiply
    43,278.70x = 64,905.90 × 13,705.60
  4. Step 4: Simplify right side
    43,278.70x = 889,574,303.04
  5. Step 5: Solve for x
    x = 889,574,303.04/43,278.70
  6. Step 6: Final answer
    x = 20,554.55

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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.