Home / 28,457.13-39,268.03-15,709.48

Finding the Fourth Proportional to 28,457.13, 39,268.03 and 15,709.48

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Solution

The fourth proportional to 28,457.13, 39,268.03 and 15,709.48 is: 21,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.13 : 39,268.03 = 15,709.48 : x
  2. Step 2: Convert to fraction form
    28,457.13/39,268.03 = 15,709.48/x
  3. Step 3: Cross multiply
    28,457.13x = 39,268.03 × 15,709.48
  4. Step 4: Simplify right side
    28,457.13x = 616,880,253.38
  5. Step 5: Solve for x
    x = 616,880,253.38/28,457.13
  6. Step 6: Final answer
    x = 21,677.53

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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.