Home / 38,904.23-53,688.89-21,909.08

Finding the Fourth Proportional to 38,904.23, 53,688.89 and 21,909.08

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Solution

The fourth proportional to 38,904.23, 53,688.89 and 21,909.08 is: 30,235.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,904.23 : 53,688.89 = 21,909.08 : x
  2. Step 2: Convert to fraction form
    38,904.23/53,688.89 = 21,909.08/x
  3. Step 3: Cross multiply
    38,904.23x = 53,688.89 × 21,909.08
  4. Step 4: Simplify right side
    38,904.23x = 1,176,274,375.12
  5. Step 5: Solve for x
    x = 1,176,274,375.12/38,904.23
  6. Step 6: Final answer
    x = 30,235.13

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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.