Home / 34,342.80-51,514.20-21,152.40

Finding the Fourth Proportional to 34,342.80, 51,514.20 and 21,152.40

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Solution

The fourth proportional to 34,342.80, 51,514.20 and 21,152.40 is: 31,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,342.80 : 51,514.20 = 21,152.40 : x
  2. Step 2: Convert to fraction form
    34,342.80/51,514.20 = 21,152.40/x
  3. Step 3: Cross multiply
    34,342.80x = 51,514.20 × 21,152.40
  4. Step 4: Simplify right side
    34,342.80x = 1,089,648,964.08
  5. Step 5: Solve for x
    x = 1,089,648,964.08/34,342.80
  6. Step 6: Final answer
    x = 31,728.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.