Home / 28,557.71-39,410.60-18,980.93

Finding the Fourth Proportional to 28,557.71, 39,410.60 and 18,980.93

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Solution

The fourth proportional to 28,557.71, 39,410.60 and 18,980.93 is: 26,194.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.71 : 39,410.60 = 18,980.93 : x
  2. Step 2: Convert to fraction form
    28,557.71/39,410.60 = 18,980.93/x
  3. Step 3: Cross multiply
    28,557.71x = 39,410.60 × 18,980.93
  4. Step 4: Simplify right side
    28,557.71x = 748,049,950.25
  5. Step 5: Solve for x
    x = 748,049,950.25/28,557.71
  6. Step 6: Final answer
    x = 26,194.32

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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.