Home / 31,215.68-43,068.96-18,635.84

Finding the Fourth Proportional to 31,215.68, 43,068.96 and 18,635.84

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Solution

The fourth proportional to 31,215.68, 43,068.96 and 18,635.84 is: 25,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.68 : 43,068.96 = 18,635.84 : x
  2. Step 2: Convert to fraction form
    31,215.68/43,068.96 = 18,635.84/x
  3. Step 3: Cross multiply
    31,215.68x = 43,068.96 × 18,635.84
  4. Step 4: Simplify right side
    31,215.68x = 802,626,247.53
  5. Step 5: Solve for x
    x = 802,626,247.53/31,215.68
  6. Step 6: Final answer
    x = 25,712.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.