Home / 28,520.04-42,744.40-13,724.98

Finding the Fourth Proportional to 28,520.04, 42,744.40 and 13,724.98

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Solution

The fourth proportional to 28,520.04, 42,744.40 and 13,724.98 is: 20,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.04 : 42,744.40 = 13,724.98 : x
  2. Step 2: Convert to fraction form
    28,520.04/42,744.40 = 13,724.98/x
  3. Step 3: Cross multiply
    28,520.04x = 42,744.40 × 13,724.98
  4. Step 4: Simplify right side
    28,520.04x = 586,666,035.11
  5. Step 5: Solve for x
    x = 586,666,035.11/28,520.04
  6. Step 6: Final answer
    x = 20,570.31

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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.