Home / 28,639.28-42,971.81-15,476.24

Finding the Fourth Proportional to 28,639.28, 42,971.81 and 15,476.24

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Solution

The fourth proportional to 28,639.28, 42,971.81 and 15,476.24 is: 23,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.28 : 42,971.81 = 15,476.24 : x
  2. Step 2: Convert to fraction form
    28,639.28/42,971.81 = 15,476.24/x
  3. Step 3: Cross multiply
    28,639.28x = 42,971.81 × 15,476.24
  4. Step 4: Simplify right side
    28,639.28x = 665,041,752.55
  5. Step 5: Solve for x
    x = 665,041,752.55/28,639.28
  6. Step 6: Final answer
    x = 23,221.32

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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.