Home / 19,783.35-29,654.51-12,370.79

Finding the Fourth Proportional to 19,783.35, 29,654.51 and 12,370.79

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Solution

The fourth proportional to 19,783.35, 29,654.51 and 12,370.79 is: 18,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.35 : 29,654.51 = 12,370.79 : x
  2. Step 2: Convert to fraction form
    19,783.35/29,654.51 = 12,370.79/x
  3. Step 3: Cross multiply
    19,783.35x = 29,654.51 × 12,370.79
  4. Step 4: Simplify right side
    19,783.35x = 366,849,820.83
  5. Step 5: Solve for x
    x = 366,849,820.83/19,783.35
  6. Step 6: Final answer
    x = 18,543.36

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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.