Home / 19,111.10-28,666.65-13,206.20

Finding the Fourth Proportional to 19,111.10, 28,666.65 and 13,206.20

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Solution

The fourth proportional to 19,111.10, 28,666.65 and 13,206.20 is: 19,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.10 : 28,666.65 = 13,206.20 : x
  2. Step 2: Convert to fraction form
    19,111.10/28,666.65 = 13,206.20/x
  3. Step 3: Cross multiply
    19,111.10x = 28,666.65 × 13,206.20
  4. Step 4: Simplify right side
    19,111.10x = 378,577,513.23
  5. Step 5: Solve for x
    x = 378,577,513.23/19,111.10
  6. Step 6: Final answer
    x = 19,809.30

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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.