Home / 28,106.10-42,161.55-9,638.10

Finding the Fourth Proportional to 28,106.10, 42,161.55 and 9,638.10

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Solution

The fourth proportional to 28,106.10, 42,161.55 and 9,638.10 is: 14,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.10 : 42,161.55 = 9,638.10 : x
  2. Step 2: Convert to fraction form
    28,106.10/42,161.55 = 9,638.10/x
  3. Step 3: Cross multiply
    28,106.10x = 42,161.55 × 9,638.10
  4. Step 4: Simplify right side
    28,106.10x = 406,357,235.06
  5. Step 5: Solve for x
    x = 406,357,235.06/28,106.10
  6. Step 6: Final answer
    x = 14,457.97

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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.