Home / 28,506.29-39,338.39-15,931.04

Finding the Fourth Proportional to 28,506.29, 39,338.39 and 15,931.04

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Solution

The fourth proportional to 28,506.29, 39,338.39 and 15,931.04 is: 21,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.29 : 39,338.39 = 15,931.04 : x
  2. Step 2: Convert to fraction form
    28,506.29/39,338.39 = 15,931.04/x
  3. Step 3: Cross multiply
    28,506.29x = 39,338.39 × 15,931.04
  4. Step 4: Simplify right side
    28,506.29x = 626,701,464.63
  5. Step 5: Solve for x
    x = 626,701,464.63/28,506.29
  6. Step 6: Final answer
    x = 21,984.67

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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.