Home / 34,218.18-47,219.76-21,478.23

Finding the Fourth Proportional to 34,218.18, 47,219.76 and 21,478.23

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Solution

The fourth proportional to 34,218.18, 47,219.76 and 21,478.23 is: 29,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,218.18 : 47,219.76 = 21,478.23 : x
  2. Step 2: Convert to fraction form
    34,218.18/47,219.76 = 21,478.23/x
  3. Step 3: Cross multiply
    34,218.18x = 47,219.76 × 21,478.23
  4. Step 4: Simplify right side
    34,218.18x = 1,014,196,865.82
  5. Step 5: Solve for x
    x = 1,014,196,865.82/34,218.18
  6. Step 6: Final answer
    x = 29,639.12

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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.