Home / 28,715.18-43,028.80-19,320.39

Finding the Fourth Proportional to 28,715.18, 43,028.80 and 19,320.39

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Solution

The fourth proportional to 28,715.18, 43,028.80 and 19,320.39 is: 28,951.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.18 : 43,028.80 = 19,320.39 : x
  2. Step 2: Convert to fraction form
    28,715.18/43,028.80 = 19,320.39/x
  3. Step 3: Cross multiply
    28,715.18x = 43,028.80 × 19,320.39
  4. Step 4: Simplify right side
    28,715.18x = 831,333,197.23
  5. Step 5: Solve for x
    x = 831,333,197.23/28,715.18
  6. Step 6: Final answer
    x = 28,951.00

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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.