Home / 47,280.32-70,931.57-18,819

Finding the Fourth Proportional to 47,280.32, 70,931.57 and 18,819

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Solution

The fourth proportional to 47,280.32, 70,931.57 and 18,819 is: 28,232.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,280.32 : 70,931.57 = 18,819 : x
  2. Step 2: Convert to fraction form
    47,280.32/70,931.57 = 18,819/x
  3. Step 3: Cross multiply
    47,280.32x = 70,931.57 × 18,819
  4. Step 4: Simplify right side
    47,280.32x = 1,334,861,215.83
  5. Step 5: Solve for x
    x = 1,334,861,215.83/47,280.32
  6. Step 6: Final answer
    x = 28,232.91

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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.