Home / 13,689.34-20,533.89-4,329.36

Finding the Fourth Proportional to 13,689.34, 20,533.89 and 4,329.36

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Solution

The fourth proportional to 13,689.34, 20,533.89 and 4,329.36 is: 6,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.34 : 20,533.89 = 4,329.36 : x
  2. Step 2: Convert to fraction form
    13,689.34/20,533.89 = 4,329.36/x
  3. Step 3: Cross multiply
    13,689.34x = 20,533.89 × 4,329.36
  4. Step 4: Simplify right side
    13,689.34x = 88,898,602.01
  5. Step 5: Solve for x
    x = 88,898,602.01/13,689.34
  6. Step 6: Final answer
    x = 6,494.00

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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.