Home / 19,435.20-29,128.69-13,803.88

Finding the Fourth Proportional to 19,435.20, 29,128.69 and 13,803.88

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Solution

The fourth proportional to 19,435.20, 29,128.69 and 13,803.88 is: 20,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,435.20 : 29,128.69 = 13,803.88 : x
  2. Step 2: Convert to fraction form
    19,435.20/29,128.69 = 13,803.88/x
  3. Step 3: Cross multiply
    19,435.20x = 29,128.69 × 13,803.88
  4. Step 4: Simplify right side
    19,435.20x = 402,088,941.32
  5. Step 5: Solve for x
    x = 402,088,941.32/19,435.20
  6. Step 6: Final answer
    x = 20,688.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.