Home / 13,643.83-18,801.21-9,860.32

Finding the Fourth Proportional to 13,643.83, 18,801.21 and 9,860.32

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Solution

The fourth proportional to 13,643.83, 18,801.21 and 9,860.32 is: 13,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.83 : 18,801.21 = 9,860.32 : x
  2. Step 2: Convert to fraction form
    13,643.83/18,801.21 = 9,860.32/x
  3. Step 3: Cross multiply
    13,643.83x = 18,801.21 × 9,860.32
  4. Step 4: Simplify right side
    13,643.83x = 185,385,946.99
  5. Step 5: Solve for x
    x = 185,385,946.99/13,643.83
  6. Step 6: Final answer
    x = 13,587.53

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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.