Home / 28,129.65-42,172.58-14,082.45

Finding the Fourth Proportional to 28,129.65, 42,172.58 and 14,082.45

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Solution

The fourth proportional to 28,129.65, 42,172.58 and 14,082.45 is: 21,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.65 : 42,172.58 = 14,082.45 : x
  2. Step 2: Convert to fraction form
    28,129.65/42,172.58 = 14,082.45/x
  3. Step 3: Cross multiply
    28,129.65x = 42,172.58 × 14,082.45
  4. Step 4: Simplify right side
    28,129.65x = 593,893,363.50
  5. Step 5: Solve for x
    x = 593,893,363.50/28,129.65
  6. Step 6: Final answer
    x = 21,112.72

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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.