Home / 39,901.08-55,063.65-21,995.70

Finding the Fourth Proportional to 39,901.08, 55,063.65 and 21,995.70

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Solution

The fourth proportional to 39,901.08, 55,063.65 and 21,995.70 is: 30,354.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,901.08 : 55,063.65 = 21,995.70 : x
  2. Step 2: Convert to fraction form
    39,901.08/55,063.65 = 21,995.70/x
  3. Step 3: Cross multiply
    39,901.08x = 55,063.65 × 21,995.70
  4. Step 4: Simplify right side
    39,901.08x = 1,211,163,526.31
  5. Step 5: Solve for x
    x = 1,211,163,526.31/39,901.08
  6. Step 6: Final answer
    x = 30,354.15

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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.