Home / 15,852.02-21,875.81-8,778.29

Finding the Fourth Proportional to 15,852.02, 21,875.81 and 8,778.29

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Solution

The fourth proportional to 15,852.02, 21,875.81 and 8,778.29 is: 12,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.02 : 21,875.81 = 8,778.29 : x
  2. Step 2: Convert to fraction form
    15,852.02/21,875.81 = 8,778.29/x
  3. Step 3: Cross multiply
    15,852.02x = 21,875.81 × 8,778.29
  4. Step 4: Simplify right side
    15,852.02x = 192,032,050.89
  5. Step 5: Solve for x
    x = 192,032,050.89/15,852.02
  6. Step 6: Final answer
    x = 12,114.05

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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.