Home / 28,702.23-39,607.85-15,955.39

Finding the Fourth Proportional to 28,702.23, 39,607.85 and 15,955.39

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Solution

The fourth proportional to 28,702.23, 39,607.85 and 15,955.39 is: 22,017.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.23 : 39,607.85 = 15,955.39 : x
  2. Step 2: Convert to fraction form
    28,702.23/39,607.85 = 15,955.39/x
  3. Step 3: Cross multiply
    28,702.23x = 39,607.85 × 15,955.39
  4. Step 4: Simplify right side
    28,702.23x = 631,958,515.01
  5. Step 5: Solve for x
    x = 631,958,515.01/28,702.23
  6. Step 6: Final answer
    x = 22,017.75

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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.