Home / 21,994.74-30,312.05-15,621.62

Finding the Fourth Proportional to 21,994.74, 30,312.05 and 15,621.62

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Solution

The fourth proportional to 21,994.74, 30,312.05 and 15,621.62 is: 21,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.74 : 30,312.05 = 15,621.62 : x
  2. Step 2: Convert to fraction form
    21,994.74/30,312.05 = 15,621.62/x
  3. Step 3: Cross multiply
    21,994.74x = 30,312.05 × 15,621.62
  4. Step 4: Simplify right side
    21,994.74x = 473,523,096.85
  5. Step 5: Solve for x
    x = 473,523,096.85/21,994.74
  6. Step 6: Final answer
    x = 21,528.92

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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.