Home / 13,434.91-18,478.53-10,776.49

Finding the Fourth Proportional to 13,434.91, 18,478.53 and 10,776.49

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Solution

The fourth proportional to 13,434.91, 18,478.53 and 10,776.49 is: 14,822.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.91 : 18,478.53 = 10,776.49 : x
  2. Step 2: Convert to fraction form
    13,434.91/18,478.53 = 10,776.49/x
  3. Step 3: Cross multiply
    13,434.91x = 18,478.53 × 10,776.49
  4. Step 4: Simplify right side
    13,434.91x = 199,133,751.51
  5. Step 5: Solve for x
    x = 199,133,751.51/13,434.91
  6. Step 6: Final answer
    x = 14,822.11

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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.