Home / 19,779.63-29,669.45-4,989.71

Finding the Fourth Proportional to 19,779.63, 29,669.45 and 4,989.71

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Solution

The fourth proportional to 19,779.63, 29,669.45 and 4,989.71 is: 7,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.63 : 29,669.45 = 4,989.71 : x
  2. Step 2: Convert to fraction form
    19,779.63/29,669.45 = 4,989.71/x
  3. Step 3: Cross multiply
    19,779.63x = 29,669.45 × 4,989.71
  4. Step 4: Simplify right side
    19,779.63x = 148,041,778.06
  5. Step 5: Solve for x
    x = 148,041,778.06/19,779.63
  6. Step 6: Final answer
    x = 7,484.56

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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.