Home / 21,358.66-29,488.81-19,116.65

Finding the Fourth Proportional to 21,358.66, 29,488.81 and 19,116.65

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Solution

The fourth proportional to 21,358.66, 29,488.81 and 19,116.65 is: 26,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.66 : 29,488.81 = 19,116.65 : x
  2. Step 2: Convert to fraction form
    21,358.66/29,488.81 = 19,116.65/x
  3. Step 3: Cross multiply
    21,358.66x = 29,488.81 × 19,116.65
  4. Step 4: Simplify right side
    21,358.66x = 563,727,064.45
  5. Step 5: Solve for x
    x = 563,727,064.45/21,358.66
  6. Step 6: Final answer
    x = 26,393.38

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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.