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Finding the Fourth Proportional to 28,898.30, 43,347.45 and 18,530.30

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Solution

The fourth proportional to 28,898.30, 43,347.45 and 18,530.30 is: 27,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.30 : 43,347.45 = 18,530.30 : x
  2. Step 2: Convert to fraction form
    28,898.30/43,347.45 = 18,530.30/x
  3. Step 3: Cross multiply
    28,898.30x = 43,347.45 × 18,530.30
  4. Step 4: Simplify right side
    28,898.30x = 803,241,252.74
  5. Step 5: Solve for x
    x = 803,241,252.74/28,898.30
  6. Step 6: Final answer
    x = 27,795.45

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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.