Home / 14,178.13-19,565.63-7,890.51

Finding the Fourth Proportional to 14,178.13, 19,565.63 and 7,890.51

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Solution

The fourth proportional to 14,178.13, 19,565.63 and 7,890.51 is: 10,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.13 : 19,565.63 = 7,890.51 : x
  2. Step 2: Convert to fraction form
    14,178.13/19,565.63 = 7,890.51/x
  3. Step 3: Cross multiply
    14,178.13x = 19,565.63 × 7,890.51
  4. Step 4: Simplify right side
    14,178.13x = 154,382,769.98
  5. Step 5: Solve for x
    x = 154,382,769.98/14,178.13
  6. Step 6: Final answer
    x = 10,888.79

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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.