Home / 28,359.02-39,135.06-15,783.77

Finding the Fourth Proportional to 28,359.02, 39,135.06 and 15,783.77

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Solution

The fourth proportional to 28,359.02, 39,135.06 and 15,783.77 is: 21,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.02 : 39,135.06 = 15,783.77 : x
  2. Step 2: Convert to fraction form
    28,359.02/39,135.06 = 15,783.77/x
  3. Step 3: Cross multiply
    28,359.02x = 39,135.06 × 15,783.77
  4. Step 4: Simplify right side
    28,359.02x = 617,698,590.30
  5. Step 5: Solve for x
    x = 617,698,590.30/28,359.02
  6. Step 6: Final answer
    x = 21,781.38

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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.