Home / 18,870.30-28,284.80-9,495.36

Finding the Fourth Proportional to 18,870.30, 28,284.80 and 9,495.36

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Solution

The fourth proportional to 18,870.30, 28,284.80 and 9,495.36 is: 14,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.30 : 28,284.80 = 9,495.36 : x
  2. Step 2: Convert to fraction form
    18,870.30/28,284.80 = 9,495.36/x
  3. Step 3: Cross multiply
    18,870.30x = 28,284.80 × 9,495.36
  4. Step 4: Simplify right side
    18,870.30x = 268,574,311.05
  5. Step 5: Solve for x
    x = 268,574,311.05/18,870.30
  6. Step 6: Final answer
    x = 14,232.65

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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.