Home / 20,762.47-28,664.04-13,709.35

Finding the Fourth Proportional to 20,762.47, 28,664.04 and 13,709.35

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Solution

The fourth proportional to 20,762.47, 28,664.04 and 13,709.35 is: 18,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.47 : 28,664.04 = 13,709.35 : x
  2. Step 2: Convert to fraction form
    20,762.47/28,664.04 = 13,709.35/x
  3. Step 3: Cross multiply
    20,762.47x = 28,664.04 × 13,709.35
  4. Step 4: Simplify right side
    20,762.47x = 392,965,356.77
  5. Step 5: Solve for x
    x = 392,965,356.77/20,762.47
  6. Step 6: Final answer
    x = 18,926.72

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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.