Home / 28,506.48-39,338.88-15,931.23

Finding the Fourth Proportional to 28,506.48, 39,338.88 and 15,931.23

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Solution

The fourth proportional to 28,506.48, 39,338.88 and 15,931.23 is: 21,985.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.48 : 39,338.88 = 15,931.23 : x
  2. Step 2: Convert to fraction form
    28,506.48/39,338.88 = 15,931.23/x
  3. Step 3: Cross multiply
    28,506.48x = 39,338.88 × 15,931.23
  4. Step 4: Simplify right side
    28,506.48x = 626,716,745.22
  5. Step 5: Solve for x
    x = 626,716,745.22/28,506.48
  6. Step 6: Final answer
    x = 21,985.06

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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.