Home / 20,315.28-28,035.54-14,357.46

Finding the Fourth Proportional to 20,315.28, 28,035.54 and 14,357.46

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Solution

The fourth proportional to 20,315.28, 28,035.54 and 14,357.46 is: 19,813.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.28 : 28,035.54 = 14,357.46 : x
  2. Step 2: Convert to fraction form
    20,315.28/28,035.54 = 14,357.46/x
  3. Step 3: Cross multiply
    20,315.28x = 28,035.54 × 14,357.46
  4. Step 4: Simplify right side
    20,315.28x = 402,519,144.13
  5. Step 5: Solve for x
    x = 402,519,144.13/20,315.28
  6. Step 6: Final answer
    x = 19,813.62

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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.