Home / 20,860.16-28,784.58-12,362.45

Finding the Fourth Proportional to 20,860.16, 28,784.58 and 12,362.45

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Solution

The fourth proportional to 20,860.16, 28,784.58 and 12,362.45 is: 17,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.16 : 28,784.58 = 12,362.45 : x
  2. Step 2: Convert to fraction form
    20,860.16/28,784.58 = 12,362.45/x
  3. Step 3: Cross multiply
    20,860.16x = 28,784.58 × 12,362.45
  4. Step 4: Simplify right side
    20,860.16x = 355,847,931.02
  5. Step 5: Solve for x
    x = 355,847,931.02/20,860.16
  6. Step 6: Final answer
    x = 17,058.73

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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.