Home / 28,592.72-39,457-15,845.36

Finding the Fourth Proportional to 28,592.72, 39,457 and 15,845.36

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Solution

The fourth proportional to 28,592.72, 39,457 and 15,845.36 is: 21,866.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.72 : 39,457 = 15,845.36 : x
  2. Step 2: Convert to fraction form
    28,592.72/39,457 = 15,845.36/x
  3. Step 3: Cross multiply
    28,592.72x = 39,457 × 15,845.36
  4. Step 4: Simplify right side
    28,592.72x = 625,210,369.52
  5. Step 5: Solve for x
    x = 625,210,369.52/28,592.72
  6. Step 6: Final answer
    x = 21,866.07

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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.