Home / 28,359.67-39,137.28-15,613.81

Finding the Fourth Proportional to 28,359.67, 39,137.28 and 15,613.81

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Solution

The fourth proportional to 28,359.67, 39,137.28 and 15,613.81 is: 21,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.67 : 39,137.28 = 15,613.81 : x
  2. Step 2: Convert to fraction form
    28,359.67/39,137.28 = 15,613.81/x
  3. Step 3: Cross multiply
    28,359.67x = 39,137.28 × 15,613.81
  4. Step 4: Simplify right side
    28,359.67x = 611,082,117.59
  5. Step 5: Solve for x
    x = 611,082,117.59/28,359.67
  6. Step 6: Final answer
    x = 21,547.58

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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.