Home / 28,114.71-38,800.77-15,541.89

Finding the Fourth Proportional to 28,114.71, 38,800.77 and 15,541.89

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Solution

The fourth proportional to 28,114.71, 38,800.77 and 15,541.89 is: 21,449.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.71 : 38,800.77 = 15,541.89 : x
  2. Step 2: Convert to fraction form
    28,114.71/38,800.77 = 15,541.89/x
  3. Step 3: Cross multiply
    28,114.71x = 38,800.77 × 15,541.89
  4. Step 4: Simplify right side
    28,114.71x = 603,037,299.26
  5. Step 5: Solve for x
    x = 603,037,299.26/28,114.71
  6. Step 6: Final answer
    x = 21,449.17

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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.