Home / 14,866.50-20,520.63-10,686.90

Finding the Fourth Proportional to 14,866.50, 20,520.63 and 10,686.90

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Solution

The fourth proportional to 14,866.50, 20,520.63 and 10,686.90 is: 14,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,866.50 : 20,520.63 = 10,686.90 : x
  2. Step 2: Convert to fraction form
    14,866.50/20,520.63 = 10,686.90/x
  3. Step 3: Cross multiply
    14,866.50x = 20,520.63 × 10,686.90
  4. Step 4: Simplify right side
    14,866.50x = 219,301,920.75
  5. Step 5: Solve for x
    x = 219,301,920.75/14,866.50
  6. Step 6: Final answer
    x = 14,751.42

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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.