Home / 28,360.02-39,136.44-15,784.77

Finding the Fourth Proportional to 28,360.02, 39,136.44 and 15,784.77

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Solution

The fourth proportional to 28,360.02, 39,136.44 and 15,784.77 is: 21,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.02 : 39,136.44 = 15,784.77 : x
  2. Step 2: Convert to fraction form
    28,360.02/39,136.44 = 15,784.77/x
  3. Step 3: Cross multiply
    28,360.02x = 39,136.44 × 15,784.77
  4. Step 4: Simplify right side
    28,360.02x = 617,759,704.02
  5. Step 5: Solve for x
    x = 617,759,704.02/28,360.02
  6. Step 6: Final answer
    x = 21,782.77

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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.