Home / 39,870.04-55,022.19-21,964.66

Finding the Fourth Proportional to 39,870.04, 55,022.19 and 21,964.66

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Solution

The fourth proportional to 39,870.04, 55,022.19 and 21,964.66 is: 30,312.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870.04 : 55,022.19 = 21,964.66 : x
  2. Step 2: Convert to fraction form
    39,870.04/55,022.19 = 21,964.66/x
  3. Step 3: Cross multiply
    39,870.04x = 55,022.19 × 21,964.66
  4. Step 4: Simplify right side
    39,870.04x = 1,208,543,398.51
  5. Step 5: Solve for x
    x = 1,208,543,398.51/39,870.04
  6. Step 6: Final answer
    x = 30,312.07

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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.