Home / 28,473.70-42,688.44-18,457.30

Finding the Fourth Proportional to 28,473.70, 42,688.44 and 18,457.30

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Solution

The fourth proportional to 28,473.70, 42,688.44 and 18,457.30 is: 27,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.70 : 42,688.44 = 18,457.30 : x
  2. Step 2: Convert to fraction form
    28,473.70/42,688.44 = 18,457.30/x
  3. Step 3: Cross multiply
    28,473.70x = 42,688.44 × 18,457.30
  4. Step 4: Simplify right side
    28,473.70x = 787,913,343.61
  5. Step 5: Solve for x
    x = 787,913,343.61/28,473.70
  6. Step 6: Final answer
    x = 27,671.62

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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.