Home / 22,621.60-31,228.50-15,080.50

Finding the Fourth Proportional to 22,621.60, 31,228.50 and 15,080.50

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Solution

The fourth proportional to 22,621.60, 31,228.50 and 15,080.50 is: 20,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.60 : 31,228.50 = 15,080.50 : x
  2. Step 2: Convert to fraction form
    22,621.60/31,228.50 = 15,080.50/x
  3. Step 3: Cross multiply
    22,621.60x = 31,228.50 × 15,080.50
  4. Step 4: Simplify right side
    22,621.60x = 470,941,394.25
  5. Step 5: Solve for x
    x = 470,941,394.25/22,621.60
  6. Step 6: Final answer
    x = 20,818.22

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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.