Home / 20,215.69-27,898.50-11,263.18

Finding the Fourth Proportional to 20,215.69, 27,898.50 and 11,263.18

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Solution

The fourth proportional to 20,215.69, 27,898.50 and 11,263.18 is: 15,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.69 : 27,898.50 = 11,263.18 : x
  2. Step 2: Convert to fraction form
    20,215.69/27,898.50 = 11,263.18/x
  3. Step 3: Cross multiply
    20,215.69x = 27,898.50 × 11,263.18
  4. Step 4: Simplify right side
    20,215.69x = 314,225,827.23
  5. Step 5: Solve for x
    x = 314,225,827.23/20,215.69
  6. Step 6: Final answer
    x = 15,543.66

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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.