Home / 13,587.84-18,742.59-9,816.55

Finding the Fourth Proportional to 13,587.84, 18,742.59 and 9,816.55

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Solution

The fourth proportional to 13,587.84, 18,742.59 and 9,816.55 is: 13,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.84 : 18,742.59 = 9,816.55 : x
  2. Step 2: Convert to fraction form
    13,587.84/18,742.59 = 9,816.55/x
  3. Step 3: Cross multiply
    13,587.84x = 18,742.59 × 9,816.55
  4. Step 4: Simplify right side
    13,587.84x = 183,987,525.01
  5. Step 5: Solve for x
    x = 183,987,525.01/13,587.84
  6. Step 6: Final answer
    x = 13,540.60

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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.