Home / 42,779.94-64,169.50-11,615.19

Finding the Fourth Proportional to 42,779.94, 64,169.50 and 11,615.19

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Solution

The fourth proportional to 42,779.94, 64,169.50 and 11,615.19 is: 17,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.94 : 64,169.50 = 11,615.19 : x
  2. Step 2: Convert to fraction form
    42,779.94/64,169.50 = 11,615.19/x
  3. Step 3: Cross multiply
    42,779.94x = 64,169.50 × 11,615.19
  4. Step 4: Simplify right side
    42,779.94x = 745,340,934.71
  5. Step 5: Solve for x
    x = 745,340,934.71/42,779.94
  6. Step 6: Final answer
    x = 17,422.67

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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.