Home / 31,742.16-43,802.49-18,312.62

Finding the Fourth Proportional to 31,742.16, 43,802.49 and 18,312.62

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Solution

The fourth proportional to 31,742.16, 43,802.49 and 18,312.62 is: 25,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.16 : 43,802.49 = 18,312.62 : x
  2. Step 2: Convert to fraction form
    31,742.16/43,802.49 = 18,312.62/x
  3. Step 3: Cross multiply
    31,742.16x = 43,802.49 × 18,312.62
  4. Step 4: Simplify right side
    31,742.16x = 802,138,101.08
  5. Step 5: Solve for x
    x = 802,138,101.08/31,742.16
  6. Step 6: Final answer
    x = 25,270.43

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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.