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Finding the Fourth Proportional to 28,030.68, 42,053.94 and 8,309.16

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Solution

The fourth proportional to 28,030.68, 42,053.94 and 8,309.16 is: 12,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.68 : 42,053.94 = 8,309.16 : x
  2. Step 2: Convert to fraction form
    28,030.68/42,053.94 = 8,309.16/x
  3. Step 3: Cross multiply
    28,030.68x = 42,053.94 × 8,309.16
  4. Step 4: Simplify right side
    28,030.68x = 349,432,916.09
  5. Step 5: Solve for x
    x = 349,432,916.09/28,030.68
  6. Step 6: Final answer
    x = 12,466.09

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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.