Home / 39,050.28-53,889.39-21,145.29

Finding the Fourth Proportional to 39,050.28, 53,889.39 and 21,145.29

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Solution

The fourth proportional to 39,050.28, 53,889.39 and 21,145.29 is: 29,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,050.28 : 53,889.39 = 21,145.29 : x
  2. Step 2: Convert to fraction form
    39,050.28/53,889.39 = 21,145.29/x
  3. Step 3: Cross multiply
    39,050.28x = 53,889.39 × 21,145.29
  4. Step 4: Simplify right side
    39,050.28x = 1,139,506,779.47
  5. Step 5: Solve for x
    x = 1,139,506,779.47/39,050.28
  6. Step 6: Final answer
    x = 29,180.50

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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.