Home / 39,779.53-54,895.95-21,875.68

Finding the Fourth Proportional to 39,779.53, 54,895.95 and 21,875.68

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Solution

The fourth proportional to 39,779.53, 54,895.95 and 21,875.68 is: 30,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.53 : 54,895.95 = 21,875.68 : x
  2. Step 2: Convert to fraction form
    39,779.53/54,895.95 = 21,875.68/x
  3. Step 3: Cross multiply
    39,779.53x = 54,895.95 × 21,875.68
  4. Step 4: Simplify right side
    39,779.53x = 1,200,886,235.50
  5. Step 5: Solve for x
    x = 1,200,886,235.50/39,779.53
  6. Step 6: Final answer
    x = 30,188.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.