Home / 39,779.56-54,897.20-21,875.93

Finding the Fourth Proportional to 39,779.56, 54,897.20 and 21,875.93

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Solution

The fourth proportional to 39,779.56, 54,897.20 and 21,875.93 is: 30,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.56 : 54,897.20 = 21,875.93 : x
  2. Step 2: Convert to fraction form
    39,779.56/54,897.20 = 21,875.93/x
  3. Step 3: Cross multiply
    39,779.56x = 54,897.20 × 21,875.93
  4. Step 4: Simplify right side
    39,779.56x = 1,200,927,084.60
  5. Step 5: Solve for x
    x = 1,200,927,084.60/39,779.56
  6. Step 6: Final answer
    x = 30,189.55

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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.