Home / 20,656.79-28,506.54-11,225.34

Finding the Fourth Proportional to 20,656.79, 28,506.54 and 11,225.34

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Solution

The fourth proportional to 20,656.79, 28,506.54 and 11,225.34 is: 15,491.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.79 : 28,506.54 = 11,225.34 : x
  2. Step 2: Convert to fraction form
    20,656.79/28,506.54 = 11,225.34/x
  3. Step 3: Cross multiply
    20,656.79x = 28,506.54 × 11,225.34
  4. Step 4: Simplify right side
    20,656.79x = 319,995,603.72
  5. Step 5: Solve for x
    x = 319,995,603.72/20,656.79
  6. Step 6: Final answer
    x = 15,491.07

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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.