Home / 15,852.26-21,875.85-8,778.53

Finding the Fourth Proportional to 15,852.26, 21,875.85 and 8,778.53

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Solution

The fourth proportional to 15,852.26, 21,875.85 and 8,778.53 is: 12,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.26 : 21,875.85 = 8,778.53 : x
  2. Step 2: Convert to fraction form
    15,852.26/21,875.85 = 8,778.53/x
  3. Step 3: Cross multiply
    15,852.26x = 21,875.85 × 8,778.53
  4. Step 4: Simplify right side
    15,852.26x = 192,037,860.19
  5. Step 5: Solve for x
    x = 192,037,860.19/15,852.26
  6. Step 6: Final answer
    x = 12,114.22

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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.