Home / 20,320.02-28,041.06-11,367.57

Finding the Fourth Proportional to 20,320.02, 28,041.06 and 11,367.57

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Solution

The fourth proportional to 20,320.02, 28,041.06 and 11,367.57 is: 15,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.02 : 28,041.06 = 11,367.57 : x
  2. Step 2: Convert to fraction form
    20,320.02/28,041.06 = 11,367.57/x
  3. Step 3: Cross multiply
    20,320.02x = 28,041.06 × 11,367.57
  4. Step 4: Simplify right side
    20,320.02x = 318,758,712.42
  5. Step 5: Solve for x
    x = 318,758,712.42/20,320.02
  6. Step 6: Final answer
    x = 15,686.93

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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.