Home / 20,557.23-30,848.20-8,870.45

Finding the Fourth Proportional to 20,557.23, 30,848.20 and 8,870.45

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Solution

The fourth proportional to 20,557.23, 30,848.20 and 8,870.45 is: 13,311.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.23 : 30,848.20 = 8,870.45 : x
  2. Step 2: Convert to fraction form
    20,557.23/30,848.20 = 8,870.45/x
  3. Step 3: Cross multiply
    20,557.23x = 30,848.20 × 8,870.45
  4. Step 4: Simplify right side
    20,557.23x = 273,637,431.78
  5. Step 5: Solve for x
    x = 273,637,431.78/20,557.23
  6. Step 6: Final answer
    x = 13,311.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.