Home / 19,878.84-27,423.78-12,323.16

Finding the Fourth Proportional to 19,878.84, 27,423.78 and 12,323.16

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Solution

The fourth proportional to 19,878.84, 27,423.78 and 12,323.16 is: 17,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.84 : 27,423.78 = 12,323.16 : x
  2. Step 2: Convert to fraction form
    19,878.84/27,423.78 = 12,323.16/x
  3. Step 3: Cross multiply
    19,878.84x = 27,423.78 × 12,323.16
  4. Step 4: Simplify right side
    19,878.84x = 337,947,628.74
  5. Step 5: Solve for x
    x = 337,947,628.74/19,878.84
  6. Step 6: Final answer
    x = 17,000.37

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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.