Home / 28,389.99-39,176.57-16,287.91

Finding the Fourth Proportional to 28,389.99, 39,176.57 and 16,287.91

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Solution

The fourth proportional to 28,389.99, 39,176.57 and 16,287.91 is: 22,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.99 : 39,176.57 = 16,287.91 : x
  2. Step 2: Convert to fraction form
    28,389.99/39,176.57 = 16,287.91/x
  3. Step 3: Cross multiply
    28,389.99x = 39,176.57 × 16,287.91
  4. Step 4: Simplify right side
    28,389.99x = 638,104,522.14
  5. Step 5: Solve for x
    x = 638,104,522.14/28,389.99
  6. Step 6: Final answer
    x = 22,476.39

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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.