Home / 12,603.16-18,886.40-11,219.28

Finding the Fourth Proportional to 12,603.16, 18,886.40 and 11,219.28

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Solution

The fourth proportional to 12,603.16, 18,886.40 and 11,219.28 is: 16,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.16 : 18,886.40 = 11,219.28 : x
  2. Step 2: Convert to fraction form
    12,603.16/18,886.40 = 11,219.28/x
  3. Step 3: Cross multiply
    12,603.16x = 18,886.40 × 11,219.28
  4. Step 4: Simplify right side
    12,603.16x = 211,891,809.79
  5. Step 5: Solve for x
    x = 211,891,809.79/12,603.16
  6. Step 6: Final answer
    x = 16,812.59

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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.