Home / 28,420.98-42,637.70-8,701.05

Finding the Fourth Proportional to 28,420.98, 42,637.70 and 8,701.05

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Solution

The fourth proportional to 28,420.98, 42,637.70 and 8,701.05 is: 13,053.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.98 : 42,637.70 = 8,701.05 : x
  2. Step 2: Convert to fraction form
    28,420.98/42,637.70 = 8,701.05/x
  3. Step 3: Cross multiply
    28,420.98x = 42,637.70 × 8,701.05
  4. Step 4: Simplify right side
    28,420.98x = 370,992,759.59
  5. Step 5: Solve for x
    x = 370,992,759.59/28,420.98
  6. Step 6: Final answer
    x = 13,053.48

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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.