Home / 19,865.84-27,417.48-12,812.76

Finding the Fourth Proportional to 19,865.84, 27,417.48 and 12,812.76

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Solution

The fourth proportional to 19,865.84, 27,417.48 and 12,812.76 is: 17,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.84 : 27,417.48 = 12,812.76 : x
  2. Step 2: Convert to fraction form
    19,865.84/27,417.48 = 12,812.76/x
  3. Step 3: Cross multiply
    19,865.84x = 27,417.48 × 12,812.76
  4. Step 4: Simplify right side
    19,865.84x = 351,293,591.04
  5. Step 5: Solve for x
    x = 351,293,591.04/19,865.84
  6. Step 6: Final answer
    x = 17,683.30

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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.