Home / 19,860.75-29,791.09-12,470.40

Finding the Fourth Proportional to 19,860.75, 29,791.09 and 12,470.40

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Solution

The fourth proportional to 19,860.75, 29,791.09 and 12,470.40 is: 18,705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.75 : 29,791.09 = 12,470.40 : x
  2. Step 2: Convert to fraction form
    19,860.75/29,791.09 = 12,470.40/x
  3. Step 3: Cross multiply
    19,860.75x = 29,791.09 × 12,470.40
  4. Step 4: Simplify right side
    19,860.75x = 371,506,808.74
  5. Step 5: Solve for x
    x = 371,506,808.74/19,860.75
  6. Step 6: Final answer
    x = 18,705.58

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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.