Home / 39,779.04-54,895.08-21,875.25

Finding the Fourth Proportional to 39,779.04, 54,895.08 and 21,875.25

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Solution

The fourth proportional to 39,779.04, 54,895.08 and 21,875.25 is: 30,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.04 : 54,895.08 = 21,875.25 : x
  2. Step 2: Convert to fraction form
    39,779.04/54,895.08 = 21,875.25/x
  3. Step 3: Cross multiply
    39,779.04x = 54,895.08 × 21,875.25
  4. Step 4: Simplify right side
    39,779.04x = 1,200,843,598.77
  5. Step 5: Solve for x
    x = 1,200,843,598.77/39,779.04
  6. Step 6: Final answer
    x = 30,187.85

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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.