Home / 21,007.02-28,987.41-12,054.33

Finding the Fourth Proportional to 21,007.02, 28,987.41 and 12,054.33

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Solution

The fourth proportional to 21,007.02, 28,987.41 and 12,054.33 is: 16,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.02 : 28,987.41 = 12,054.33 : x
  2. Step 2: Convert to fraction form
    21,007.02/28,987.41 = 12,054.33/x
  3. Step 3: Cross multiply
    21,007.02x = 28,987.41 × 12,054.33
  4. Step 4: Simplify right side
    21,007.02x = 349,423,805.99
  5. Step 5: Solve for x
    x = 349,423,805.99/21,007.02
  6. Step 6: Final answer
    x = 16,633.67

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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.