Home / 28,513.80-42,770.70-16,818.75

Finding the Fourth Proportional to 28,513.80, 42,770.70 and 16,818.75

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Solution

The fourth proportional to 28,513.80, 42,770.70 and 16,818.75 is: 25,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.80 : 42,770.70 = 16,818.75 : x
  2. Step 2: Convert to fraction form
    28,513.80/42,770.70 = 16,818.75/x
  3. Step 3: Cross multiply
    28,513.80x = 42,770.70 × 16,818.75
  4. Step 4: Simplify right side
    28,513.80x = 719,349,710.63
  5. Step 5: Solve for x
    x = 719,349,710.63/28,513.80
  6. Step 6: Final answer
    x = 25,228.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.