Home / 13,865.55-20,666.58-13,077.45

Finding the Fourth Proportional to 13,865.55, 20,666.58 and 13,077.45

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Solution

The fourth proportional to 13,865.55, 20,666.58 and 13,077.45 is: 19,491.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.55 : 20,666.58 = 13,077.45 : x
  2. Step 2: Convert to fraction form
    13,865.55/20,666.58 = 13,077.45/x
  3. Step 3: Cross multiply
    13,865.55x = 20,666.58 × 13,077.45
  4. Step 4: Simplify right side
    13,865.55x = 270,266,117.58
  5. Step 5: Solve for x
    x = 270,266,117.58/13,865.55
  6. Step 6: Final answer
    x = 19,491.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.