Home / 20,656.08-28,509.90-13,583.16

Finding the Fourth Proportional to 20,656.08, 28,509.90 and 13,583.16

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Solution

The fourth proportional to 20,656.08, 28,509.90 and 13,583.16 is: 18,747.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.08 : 28,509.90 = 13,583.16 : x
  2. Step 2: Convert to fraction form
    20,656.08/28,509.90 = 13,583.16/x
  3. Step 3: Cross multiply
    20,656.08x = 28,509.90 × 13,583.16
  4. Step 4: Simplify right side
    20,656.08x = 387,254,533.28
  5. Step 5: Solve for x
    x = 387,254,533.28/20,656.08
  6. Step 6: Final answer
    x = 18,747.73

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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.