Home / 28,239.84-42,333.12-10,709.28

Finding the Fourth Proportional to 28,239.84, 42,333.12 and 10,709.28

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Solution

The fourth proportional to 28,239.84, 42,333.12 and 10,709.28 is: 16,053.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.84 : 42,333.12 = 10,709.28 : x
  2. Step 2: Convert to fraction form
    28,239.84/42,333.12 = 10,709.28/x
  3. Step 3: Cross multiply
    28,239.84x = 42,333.12 × 10,709.28
  4. Step 4: Simplify right side
    28,239.84x = 453,357,235.35
  5. Step 5: Solve for x
    x = 453,357,235.35/28,239.84
  6. Step 6: Final answer
    x = 16,053.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.