Home / 28,538.61-42,808.21-12,744.45

Finding the Fourth Proportional to 28,538.61, 42,808.21 and 12,744.45

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Solution

The fourth proportional to 28,538.61, 42,808.21 and 12,744.45 is: 19,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.61 : 42,808.21 = 12,744.45 : x
  2. Step 2: Convert to fraction form
    28,538.61/42,808.21 = 12,744.45/x
  3. Step 3: Cross multiply
    28,538.61x = 42,808.21 × 12,744.45
  4. Step 4: Simplify right side
    28,538.61x = 545,566,957.60
  5. Step 5: Solve for x
    x = 545,566,957.60/28,538.61
  6. Step 6: Final answer
    x = 19,116.80

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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.