Home / 28,453.04-42,679.56-9,985.04

Finding the Fourth Proportional to 28,453.04, 42,679.56 and 9,985.04

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Solution

The fourth proportional to 28,453.04, 42,679.56 and 9,985.04 is: 14,977.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.04 : 42,679.56 = 9,985.04 : x
  2. Step 2: Convert to fraction form
    28,453.04/42,679.56 = 9,985.04/x
  3. Step 3: Cross multiply
    28,453.04x = 42,679.56 × 9,985.04
  4. Step 4: Simplify right side
    28,453.04x = 426,157,113.78
  5. Step 5: Solve for x
    x = 426,157,113.78/28,453.04
  6. Step 6: Final answer
    x = 14,977.56

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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.