Home / 28,012.05-42,000.84-13,762.40

Finding the Fourth Proportional to 28,012.05, 42,000.84 and 13,762.40

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Solution

The fourth proportional to 28,012.05, 42,000.84 and 13,762.40 is: 20,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.05 : 42,000.84 = 13,762.40 : x
  2. Step 2: Convert to fraction form
    28,012.05/42,000.84 = 13,762.40/x
  3. Step 3: Cross multiply
    28,012.05x = 42,000.84 × 13,762.40
  4. Step 4: Simplify right side
    28,012.05x = 578,032,150.41
  5. Step 5: Solve for x
    x = 578,032,150.41/28,012.05
  6. Step 6: Final answer
    x = 20,635.12

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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.