Home / 28,510.68-42,734.16-11,865.18

Finding the Fourth Proportional to 28,510.68, 42,734.16 and 11,865.18

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Solution

The fourth proportional to 28,510.68, 42,734.16 and 11,865.18 is: 17,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.68 : 42,734.16 = 11,865.18 : x
  2. Step 2: Convert to fraction form
    28,510.68/42,734.16 = 11,865.18/x
  3. Step 3: Cross multiply
    28,510.68x = 42,734.16 × 11,865.18
  4. Step 4: Simplify right side
    28,510.68x = 507,048,500.55
  5. Step 5: Solve for x
    x = 507,048,500.55/28,510.68
  6. Step 6: Final answer
    x = 17,784.51

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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.