Home / 42,856.53-64,326.30-20,685.48

Finding the Fourth Proportional to 42,856.53, 64,326.30 and 20,685.48

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Solution

The fourth proportional to 42,856.53, 64,326.30 and 20,685.48 is: 31,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,856.53 : 64,326.30 = 20,685.48 : x
  2. Step 2: Convert to fraction form
    42,856.53/64,326.30 = 20,685.48/x
  3. Step 3: Cross multiply
    42,856.53x = 64,326.30 × 20,685.48
  4. Step 4: Simplify right side
    42,856.53x = 1,330,620,392.12
  5. Step 5: Solve for x
    x = 1,330,620,392.12/42,856.53
  6. Step 6: Final answer
    x = 31,048.25

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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.