Home / 39,289.06-54,218.73-21,384.08

Finding the Fourth Proportional to 39,289.06, 54,218.73 and 21,384.08

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Solution

The fourth proportional to 39,289.06, 54,218.73 and 21,384.08 is: 29,509.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.06 : 54,218.73 = 21,384.08 : x
  2. Step 2: Convert to fraction form
    39,289.06/54,218.73 = 21,384.08/x
  3. Step 3: Cross multiply
    39,289.06x = 54,218.73 × 21,384.08
  4. Step 4: Simplify right side
    39,289.06x = 1,159,417,659.82
  5. Step 5: Solve for x
    x = 1,159,417,659.82/39,289.06
  6. Step 6: Final answer
    x = 29,509.94

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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.