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Finding the Fourth Proportional to 28,903.68, 43,368.64 and 28,437.76

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Solution

The fourth proportional to 28,903.68, 43,368.64 and 28,437.76 is: 42,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.68 : 43,368.64 = 28,437.76 : x
  2. Step 2: Convert to fraction form
    28,903.68/43,368.64 = 28,437.76/x
  3. Step 3: Cross multiply
    28,903.68x = 43,368.64 × 28,437.76
  4. Step 4: Simplify right side
    28,903.68x = 1,233,306,975.85
  5. Step 5: Solve for x
    x = 1,233,306,975.85/28,903.68
  6. Step 6: Final answer
    x = 42,669.55

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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.