Home / 19,900.40-29,798.76-10,621.04

Finding the Fourth Proportional to 19,900.40, 29,798.76 and 10,621.04

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Solution

The fourth proportional to 19,900.40, 29,798.76 and 10,621.04 is: 15,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.40 : 29,798.76 = 10,621.04 : x
  2. Step 2: Convert to fraction form
    19,900.40/29,798.76 = 10,621.04/x
  3. Step 3: Cross multiply
    19,900.40x = 29,798.76 × 10,621.04
  4. Step 4: Simplify right side
    19,900.40x = 316,493,821.91
  5. Step 5: Solve for x
    x = 316,493,821.91/19,900.40
  6. Step 6: Final answer
    x = 15,903.89

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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.