Home / 20,529.65-30,784.90-10,666.28

Finding the Fourth Proportional to 20,529.65, 30,784.90 and 10,666.28

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Solution

The fourth proportional to 20,529.65, 30,784.90 and 10,666.28 is: 15,994.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.65 : 30,784.90 = 10,666.28 : x
  2. Step 2: Convert to fraction form
    20,529.65/30,784.90 = 10,666.28/x
  3. Step 3: Cross multiply
    20,529.65x = 30,784.90 × 10,666.28
  4. Step 4: Simplify right side
    20,529.65x = 328,360,298.03
  5. Step 5: Solve for x
    x = 328,360,298.03/20,529.65
  6. Step 6: Final answer
    x = 15,994.44

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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.