Home / 19,890.32-29,779.80-10,635.92

Finding the Fourth Proportional to 19,890.32, 29,779.80 and 10,635.92

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Solution

The fourth proportional to 19,890.32, 29,779.80 and 10,635.92 is: 15,924.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.32 : 29,779.80 = 10,635.92 : x
  2. Step 2: Convert to fraction form
    19,890.32/29,779.80 = 10,635.92/x
  3. Step 3: Cross multiply
    19,890.32x = 29,779.80 × 10,635.92
  4. Step 4: Simplify right side
    19,890.32x = 316,735,570.42
  5. Step 5: Solve for x
    x = 316,735,570.42/19,890.32
  6. Step 6: Final answer
    x = 15,924.11

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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.