Home / 28,681.16-39,579.76-16,105.64

Finding the Fourth Proportional to 28,681.16, 39,579.76 and 16,105.64

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Solution

The fourth proportional to 28,681.16, 39,579.76 and 16,105.64 is: 22,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.16 : 39,579.76 = 16,105.64 : x
  2. Step 2: Convert to fraction form
    28,681.16/39,579.76 = 16,105.64/x
  3. Step 3: Cross multiply
    28,681.16x = 39,579.76 × 16,105.64
  4. Step 4: Simplify right side
    28,681.16x = 637,457,456.01
  5. Step 5: Solve for x
    x = 637,457,456.01/28,681.16
  6. Step 6: Final answer
    x = 22,225.65

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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.