Home / 18,870.23-28,303.71-6,389.99

Finding the Fourth Proportional to 18,870.23, 28,303.71 and 6,389.99

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Solution

The fourth proportional to 18,870.23, 28,303.71 and 6,389.99 is: 9,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.23 : 28,303.71 = 6,389.99 : x
  2. Step 2: Convert to fraction form
    18,870.23/28,303.71 = 6,389.99/x
  3. Step 3: Cross multiply
    18,870.23x = 28,303.71 × 6,389.99
  4. Step 4: Simplify right side
    18,870.23x = 180,860,423.86
  5. Step 5: Solve for x
    x = 180,860,423.86/18,870.23
  6. Step 6: Final answer
    x = 9,584.43

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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.