Home / 16,689.45-23,030.55-9,135.39

Finding the Fourth Proportional to 16,689.45, 23,030.55 and 9,135.39

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Solution

The fourth proportional to 16,689.45, 23,030.55 and 9,135.39 is: 12,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.45 : 23,030.55 = 9,135.39 : x
  2. Step 2: Convert to fraction form
    16,689.45/23,030.55 = 9,135.39/x
  3. Step 3: Cross multiply
    16,689.45x = 23,030.55 × 9,135.39
  4. Step 4: Simplify right side
    16,689.45x = 210,393,056.16
  5. Step 5: Solve for x
    x = 210,393,056.16/16,689.45
  6. Step 6: Final answer
    x = 12,606.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.