Home / 28,235.04-38,964.28-15,488.28

Finding the Fourth Proportional to 28,235.04, 38,964.28 and 15,488.28

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Solution

The fourth proportional to 28,235.04, 38,964.28 and 15,488.28 is: 21,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.04 : 38,964.28 = 15,488.28 : x
  2. Step 2: Convert to fraction form
    28,235.04/38,964.28 = 15,488.28/x
  3. Step 3: Cross multiply
    28,235.04x = 38,964.28 × 15,488.28
  4. Step 4: Simplify right side
    28,235.04x = 603,489,678.64
  5. Step 5: Solve for x
    x = 603,489,678.64/28,235.04
  6. Step 6: Final answer
    x = 21,373.79

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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.