Home / 70,929.36-106,392.96-18,338.40

Finding the Fourth Proportional to 70,929.36, 106,392.96 and 18,338.40

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Solution

The fourth proportional to 70,929.36, 106,392.96 and 18,338.40 is: 27,507.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,929.36 : 106,392.96 = 18,338.40 : x
  2. Step 2: Convert to fraction form
    70,929.36/106,392.96 = 18,338.40/x
  3. Step 3: Cross multiply
    70,929.36x = 106,392.96 × 18,338.40
  4. Step 4: Simplify right side
    70,929.36x = 1,951,076,657.66
  5. Step 5: Solve for x
    x = 1,951,076,657.66/70,929.36
  6. Step 6: Final answer
    x = 27,507.32

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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.