Home / 21,870.61-32,815.18-10,777.35

Finding the Fourth Proportional to 21,870.61, 32,815.18 and 10,777.35

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Solution

The fourth proportional to 21,870.61, 32,815.18 and 10,777.35 is: 16,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.61 : 32,815.18 = 10,777.35 : x
  2. Step 2: Convert to fraction form
    21,870.61/32,815.18 = 10,777.35/x
  3. Step 3: Cross multiply
    21,870.61x = 32,815.18 × 10,777.35
  4. Step 4: Simplify right side
    21,870.61x = 353,660,756.08
  5. Step 5: Solve for x
    x = 353,660,756.08/21,870.61
  6. Step 6: Final answer
    x = 16,170.60

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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.