Home / 29,328.09-40,418.46-20,830.57

Finding the Fourth Proportional to 29,328.09, 40,418.46 and 20,830.57

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Solution

The fourth proportional to 29,328.09, 40,418.46 and 20,830.57 is: 28,707.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,328.09 : 40,418.46 = 20,830.57 : x
  2. Step 2: Convert to fraction form
    29,328.09/40,418.46 = 20,830.57/x
  3. Step 3: Cross multiply
    29,328.09x = 40,418.46 × 20,830.57
  4. Step 4: Simplify right side
    29,328.09x = 841,939,560.32
  5. Step 5: Solve for x
    x = 841,939,560.32/29,328.09
  6. Step 6: Final answer
    x = 28,707.62

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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.