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Finding the Fourth Proportional to 28,075.80, 38,730.63 and 16,737.31

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Solution

The fourth proportional to 28,075.80, 38,730.63 and 16,737.31 is: 23,089.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.80 : 38,730.63 = 16,737.31 : x
  2. Step 2: Convert to fraction form
    28,075.80/38,730.63 = 16,737.31/x
  3. Step 3: Cross multiply
    28,075.80x = 38,730.63 × 16,737.31
  4. Step 4: Simplify right side
    28,075.80x = 648,246,560.81
  5. Step 5: Solve for x
    x = 648,246,560.81/28,075.80
  6. Step 6: Final answer
    x = 23,089.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.