Home / 39,061.76-53,904.80-21,156.32

Finding the Fourth Proportional to 39,061.76, 53,904.80 and 21,156.32

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Solution

The fourth proportional to 39,061.76, 53,904.80 and 21,156.32 is: 29,195.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,061.76 : 53,904.80 = 21,156.32 : x
  2. Step 2: Convert to fraction form
    39,061.76/53,904.80 = 21,156.32/x
  3. Step 3: Cross multiply
    39,061.76x = 53,904.80 × 21,156.32
  4. Step 4: Simplify right side
    39,061.76x = 1,140,427,198.34
  5. Step 5: Solve for x
    x = 1,140,427,198.34/39,061.76
  6. Step 6: Final answer
    x = 29,195.49

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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.