Home / 28,890.81-39,870.23-16,316.37

Finding the Fourth Proportional to 28,890.81, 39,870.23 and 16,316.37

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Solution

The fourth proportional to 28,890.81, 39,870.23 and 16,316.37 is: 22,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.81 : 39,870.23 = 16,316.37 : x
  2. Step 2: Convert to fraction form
    28,890.81/39,870.23 = 16,316.37/x
  3. Step 3: Cross multiply
    28,890.81x = 39,870.23 × 16,316.37
  4. Step 4: Simplify right side
    28,890.81x = 650,537,343.08
  5. Step 5: Solve for x
    x = 650,537,343.08/28,890.81
  6. Step 6: Final answer
    x = 22,517.10

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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.