Home / 30,779.70-46,171.35-9,720.39

Finding the Fourth Proportional to 30,779.70, 46,171.35 and 9,720.39

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Solution

The fourth proportional to 30,779.70, 46,171.35 and 9,720.39 is: 14,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,779.70 : 46,171.35 = 9,720.39 : x
  2. Step 2: Convert to fraction form
    30,779.70/46,171.35 = 9,720.39/x
  3. Step 3: Cross multiply
    30,779.70x = 46,171.35 × 9,720.39
  4. Step 4: Simplify right side
    30,779.70x = 448,803,528.83
  5. Step 5: Solve for x
    x = 448,803,528.83/30,779.70
  6. Step 6: Final answer
    x = 14,581.15

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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.