Home / 34,143.95-47,114.84-20,718.47

Finding the Fourth Proportional to 34,143.95, 47,114.84 and 20,718.47

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Solution

The fourth proportional to 34,143.95, 47,114.84 and 20,718.47 is: 28,589.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,143.95 : 47,114.84 = 20,718.47 : x
  2. Step 2: Convert to fraction form
    34,143.95/47,114.84 = 20,718.47/x
  3. Step 3: Cross multiply
    34,143.95x = 47,114.84 × 20,718.47
  4. Step 4: Simplify right side
    34,143.95x = 976,147,059.93
  5. Step 5: Solve for x
    x = 976,147,059.93/34,143.95
  6. Step 6: Final answer
    x = 28,589.17

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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.