Home / 13,587.91-18,742.69-9,816.62

Finding the Fourth Proportional to 13,587.91, 18,742.69 and 9,816.62

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Solution

The fourth proportional to 13,587.91, 18,742.69 and 9,816.62 is: 13,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.91 : 18,742.69 = 9,816.62 : x
  2. Step 2: Convert to fraction form
    13,587.91/18,742.69 = 9,816.62/x
  3. Step 3: Cross multiply
    13,587.91x = 18,742.69 × 9,816.62
  4. Step 4: Simplify right side
    13,587.91x = 183,989,865.51
  5. Step 5: Solve for x
    x = 183,989,865.51/13,587.91
  6. Step 6: Final answer
    x = 13,540.70

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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.