Home / 20,643.66-28,488.63-11,693.02

Finding the Fourth Proportional to 20,643.66, 28,488.63 and 11,693.02

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Solution

The fourth proportional to 20,643.66, 28,488.63 and 11,693.02 is: 16,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.66 : 28,488.63 = 11,693.02 : x
  2. Step 2: Convert to fraction form
    20,643.66/28,488.63 = 11,693.02/x
  3. Step 3: Cross multiply
    20,643.66x = 28,488.63 × 11,693.02
  4. Step 4: Simplify right side
    20,643.66x = 333,118,019.91
  5. Step 5: Solve for x
    x = 333,118,019.91/20,643.66
  6. Step 6: Final answer
    x = 16,136.58

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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.