Home / 13,920.18-19,210.23-7,952.82

Finding the Fourth Proportional to 13,920.18, 19,210.23 and 7,952.82

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Solution

The fourth proportional to 13,920.18, 19,210.23 and 7,952.82 is: 10,975.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.18 : 19,210.23 = 7,952.82 : x
  2. Step 2: Convert to fraction form
    13,920.18/19,210.23 = 7,952.82/x
  3. Step 3: Cross multiply
    13,920.18x = 19,210.23 × 7,952.82
  4. Step 4: Simplify right side
    13,920.18x = 152,775,501.35
  5. Step 5: Solve for x
    x = 152,775,501.35/13,920.18
  6. Step 6: Final answer
    x = 10,975.11

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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.