Home / 15,582.69-21,504.60-8,868.15

Finding the Fourth Proportional to 15,582.69, 21,504.60 and 8,868.15

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Solution

The fourth proportional to 15,582.69, 21,504.60 and 8,868.15 is: 12,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.69 : 21,504.60 = 8,868.15 : x
  2. Step 2: Convert to fraction form
    15,582.69/21,504.60 = 8,868.15/x
  3. Step 3: Cross multiply
    15,582.69x = 21,504.60 × 8,868.15
  4. Step 4: Simplify right side
    15,582.69x = 190,706,018.49
  5. Step 5: Solve for x
    x = 190,706,018.49/15,582.69
  6. Step 6: Final answer
    x = 12,238.32

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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.