Home / 28,013.91-38,658.70-15,267.21

Finding the Fourth Proportional to 28,013.91, 38,658.70 and 15,267.21

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Solution

The fourth proportional to 28,013.91, 38,658.70 and 15,267.21 is: 21,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.91 : 38,658.70 = 15,267.21 : x
  2. Step 2: Convert to fraction form
    28,013.91/38,658.70 = 15,267.21/x
  3. Step 3: Cross multiply
    28,013.91x = 38,658.70 × 15,267.21
  4. Step 4: Simplify right side
    28,013.91x = 590,210,491.23
  5. Step 5: Solve for x
    x = 590,210,491.23/28,013.91
  6. Step 6: Final answer
    x = 21,068.48

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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.