Home / 28,486.68-42,730.20-18,688.08

Finding the Fourth Proportional to 28,486.68, 42,730.20 and 18,688.08

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Solution

The fourth proportional to 28,486.68, 42,730.20 and 18,688.08 is: 28,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.68 : 42,730.20 = 18,688.08 : x
  2. Step 2: Convert to fraction form
    28,486.68/42,730.20 = 18,688.08/x
  3. Step 3: Cross multiply
    28,486.68x = 42,730.20 × 18,688.08
  4. Step 4: Simplify right side
    28,486.68x = 798,545,396.02
  5. Step 5: Solve for x
    x = 798,545,396.02/28,486.68
  6. Step 6: Final answer
    x = 28,032.24

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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.