Home / 28,557.83-39,427.67-18,353

Finding the Fourth Proportional to 28,557.83, 39,427.67 and 18,353

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Solution

The fourth proportional to 28,557.83, 39,427.67 and 18,353 is: 25,338.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.83 : 39,427.67 = 18,353 : x
  2. Step 2: Convert to fraction form
    28,557.83/39,427.67 = 18,353/x
  3. Step 3: Cross multiply
    28,557.83x = 39,427.67 × 18,353
  4. Step 4: Simplify right side
    28,557.83x = 723,616,027.51
  5. Step 5: Solve for x
    x = 723,616,027.51/28,557.83
  6. Step 6: Final answer
    x = 25,338.62

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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.