Home / 39,048.56-53,886.80-21,143.20

Finding the Fourth Proportional to 39,048.56, 53,886.80 and 21,143.20

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Solution

The fourth proportional to 39,048.56, 53,886.80 and 21,143.20 is: 29,177.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,048.56 : 53,886.80 = 21,143.20 : x
  2. Step 2: Convert to fraction form
    39,048.56/53,886.80 = 21,143.20/x
  3. Step 3: Cross multiply
    39,048.56x = 53,886.80 × 21,143.20
  4. Step 4: Simplify right side
    39,048.56x = 1,139,339,389.76
  5. Step 5: Solve for x
    x = 1,139,339,389.76/39,048.56
  6. Step 6: Final answer
    x = 29,177.50

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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.