Home / 30,302.32-41,781.42-20,746.84

Finding the Fourth Proportional to 30,302.32, 41,781.42 and 20,746.84

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Solution

The fourth proportional to 30,302.32, 41,781.42 and 20,746.84 is: 28,606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.32 : 41,781.42 = 20,746.84 : x
  2. Step 2: Convert to fraction form
    30,302.32/41,781.42 = 20,746.84/x
  3. Step 3: Cross multiply
    30,302.32x = 41,781.42 × 20,746.84
  4. Step 4: Simplify right side
    30,302.32x = 866,832,435.71
  5. Step 5: Solve for x
    x = 866,832,435.71/30,302.32
  6. Step 6: Final answer
    x = 28,606.14

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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.