Home / 19,130.80-28,688.10-9,273.10

Finding the Fourth Proportional to 19,130.80, 28,688.10 and 9,273.10

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Solution

The fourth proportional to 19,130.80, 28,688.10 and 9,273.10 is: 13,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.80 : 28,688.10 = 9,273.10 : x
  2. Step 2: Convert to fraction form
    19,130.80/28,688.10 = 9,273.10/x
  3. Step 3: Cross multiply
    19,130.80x = 28,688.10 × 9,273.10
  4. Step 4: Simplify right side
    19,130.80x = 266,027,620.11
  5. Step 5: Solve for x
    x = 266,027,620.11/19,130.80
  6. Step 6: Final answer
    x = 13,905.72

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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.