Home / 42,856.99-64,326.95-20,685.97

Finding the Fourth Proportional to 42,856.99, 64,326.95 and 20,685.97

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Solution

The fourth proportional to 42,856.99, 64,326.95 and 20,685.97 is: 31,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,856.99 : 64,326.95 = 20,685.97 : x
  2. Step 2: Convert to fraction form
    42,856.99/64,326.95 = 20,685.97/x
  3. Step 3: Cross multiply
    42,856.99x = 64,326.95 × 20,685.97
  4. Step 4: Simplify right side
    42,856.99x = 1,330,665,357.89
  5. Step 5: Solve for x
    x = 1,330,665,357.89/42,856.99
  6. Step 6: Final answer
    x = 31,048.97

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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.