Home / 18,017.48-26,985.18-12,445.50

Finding the Fourth Proportional to 18,017.48, 26,985.18 and 12,445.50

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Solution

The fourth proportional to 18,017.48, 26,985.18 and 12,445.50 is: 18,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.48 : 26,985.18 = 12,445.50 : x
  2. Step 2: Convert to fraction form
    18,017.48/26,985.18 = 12,445.50/x
  3. Step 3: Cross multiply
    18,017.48x = 26,985.18 × 12,445.50
  4. Step 4: Simplify right side
    18,017.48x = 335,844,057.69
  5. Step 5: Solve for x
    x = 335,844,057.69/18,017.48
  6. Step 6: Final answer
    x = 18,639.90

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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.