Home / 20,368.04-30,551.70-8,689.28

Finding the Fourth Proportional to 20,368.04, 30,551.70 and 8,689.28

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Solution

The fourth proportional to 20,368.04, 30,551.70 and 8,689.28 is: 13,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.04 : 30,551.70 = 8,689.28 : x
  2. Step 2: Convert to fraction form
    20,368.04/30,551.70 = 8,689.28/x
  3. Step 3: Cross multiply
    20,368.04x = 30,551.70 × 8,689.28
  4. Step 4: Simplify right side
    20,368.04x = 265,472,275.78
  5. Step 5: Solve for x
    x = 265,472,275.78/20,368.04
  6. Step 6: Final answer
    x = 13,033.77

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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.