Home / 28,457.07-39,274.71-15,882.63

Finding the Fourth Proportional to 28,457.07, 39,274.71 and 15,882.63

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Solution

The fourth proportional to 28,457.07, 39,274.71 and 15,882.63 is: 21,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.07 : 39,274.71 = 15,882.63 : x
  2. Step 2: Convert to fraction form
    28,457.07/39,274.71 = 15,882.63/x
  3. Step 3: Cross multiply
    28,457.07x = 39,274.71 × 15,882.63
  4. Step 4: Simplify right side
    28,457.07x = 623,785,687.29
  5. Step 5: Solve for x
    x = 623,785,687.29/28,457.07
  6. Step 6: Final answer
    x = 21,920.24

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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.