Home / 28,360.16-39,137.27-15,784.91

Finding the Fourth Proportional to 28,360.16, 39,137.27 and 15,784.91

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Solution

The fourth proportional to 28,360.16, 39,137.27 and 15,784.91 is: 21,783.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.16 : 39,137.27 = 15,784.91 : x
  2. Step 2: Convert to fraction form
    28,360.16/39,137.27 = 15,784.91/x
  3. Step 3: Cross multiply
    28,360.16x = 39,137.27 × 15,784.91
  4. Step 4: Simplify right side
    28,360.16x = 617,778,009.98
  5. Step 5: Solve for x
    x = 617,778,009.98/28,360.16
  6. Step 6: Final answer
    x = 21,783.31

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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.