Home / 28,424.80-42,637.20-16,136.80

Finding the Fourth Proportional to 28,424.80, 42,637.20 and 16,136.80

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Solution

The fourth proportional to 28,424.80, 42,637.20 and 16,136.80 is: 24,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.80 : 42,637.20 = 16,136.80 : x
  2. Step 2: Convert to fraction form
    28,424.80/42,637.20 = 16,136.80/x
  3. Step 3: Cross multiply
    28,424.80x = 42,637.20 × 16,136.80
  4. Step 4: Simplify right side
    28,424.80x = 688,027,968.96
  5. Step 5: Solve for x
    x = 688,027,968.96/28,424.80
  6. Step 6: Final answer
    x = 24,205.20

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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.