Home / 30,150.85-41,569.93-21,547.31

Finding the Fourth Proportional to 30,150.85, 41,569.93 and 21,547.31

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Solution

The fourth proportional to 30,150.85, 41,569.93 and 21,547.31 is: 29,707.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,150.85 : 41,569.93 = 21,547.31 : x
  2. Step 2: Convert to fraction form
    30,150.85/41,569.93 = 21,547.31/x
  3. Step 3: Cross multiply
    30,150.85x = 41,569.93 × 21,547.31
  4. Step 4: Simplify right side
    30,150.85x = 895,720,221.30
  5. Step 5: Solve for x
    x = 895,720,221.30/30,150.85
  6. Step 6: Final answer
    x = 29,707.96

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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.