Home / 18,900.18-28,356.45-9,038.22

Finding the Fourth Proportional to 18,900.18, 28,356.45 and 9,038.22

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Solution

The fourth proportional to 18,900.18, 28,356.45 and 9,038.22 is: 13,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.18 : 28,356.45 = 9,038.22 : x
  2. Step 2: Convert to fraction form
    18,900.18/28,356.45 = 9,038.22/x
  3. Step 3: Cross multiply
    18,900.18x = 28,356.45 × 9,038.22
  4. Step 4: Simplify right side
    18,900.18x = 256,291,833.52
  5. Step 5: Solve for x
    x = 256,291,833.52/18,900.18
  6. Step 6: Final answer
    x = 13,560.29

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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.