Home / 28,570.23-39,427.07-15,823.82

Finding the Fourth Proportional to 28,570.23, 39,427.07 and 15,823.82

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Solution

The fourth proportional to 28,570.23, 39,427.07 and 15,823.82 is: 21,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.23 : 39,427.07 = 15,823.82 : x
  2. Step 2: Convert to fraction form
    28,570.23/39,427.07 = 15,823.82/x
  3. Step 3: Cross multiply
    28,570.23x = 39,427.07 × 15,823.82
  4. Step 4: Simplify right side
    28,570.23x = 623,886,582.55
  5. Step 5: Solve for x
    x = 623,886,582.55/28,570.23
  6. Step 6: Final answer
    x = 21,836.95

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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.