Home / 19,877.40-29,816.10-16,621.20

Finding the Fourth Proportional to 19,877.40, 29,816.10 and 16,621.20

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Solution

The fourth proportional to 19,877.40, 29,816.10 and 16,621.20 is: 24,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.40 : 29,816.10 = 16,621.20 : x
  2. Step 2: Convert to fraction form
    19,877.40/29,816.10 = 16,621.20/x
  3. Step 3: Cross multiply
    19,877.40x = 29,816.10 × 16,621.20
  4. Step 4: Simplify right side
    19,877.40x = 495,579,361.32
  5. Step 5: Solve for x
    x = 495,579,361.32/19,877.40
  6. Step 6: Final answer
    x = 24,931.80

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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.