Home / 39,559.20-59,339.40-12,905.07

Finding the Fourth Proportional to 39,559.20, 59,339.40 and 12,905.07

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Solution

The fourth proportional to 39,559.20, 59,339.40 and 12,905.07 is: 19,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,559.20 : 59,339.40 = 12,905.07 : x
  2. Step 2: Convert to fraction form
    39,559.20/59,339.40 = 12,905.07/x
  3. Step 3: Cross multiply
    39,559.20x = 59,339.40 × 12,905.07
  4. Step 4: Simplify right side
    39,559.20x = 765,779,110.76
  5. Step 5: Solve for x
    x = 765,779,110.76/39,559.20
  6. Step 6: Final answer
    x = 19,357.80

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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.