Home / 28,705.02-39,612.15-16,129.50

Finding the Fourth Proportional to 28,705.02, 39,612.15 and 16,129.50

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Solution

The fourth proportional to 28,705.02, 39,612.15 and 16,129.50 is: 22,258.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.02 : 39,612.15 = 16,129.50 : x
  2. Step 2: Convert to fraction form
    28,705.02/39,612.15 = 16,129.50/x
  3. Step 3: Cross multiply
    28,705.02x = 39,612.15 × 16,129.50
  4. Step 4: Simplify right side
    28,705.02x = 638,924,173.43
  5. Step 5: Solve for x
    x = 638,924,173.43/28,705.02
  6. Step 6: Final answer
    x = 22,258.27

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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.