Home / 39,931.12-59,816.49-19,880.20

Finding the Fourth Proportional to 39,931.12, 59,816.49 and 19,880.20

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Solution

The fourth proportional to 39,931.12, 59,816.49 and 19,880.20 is: 29,780.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,931.12 : 59,816.49 = 19,880.20 : x
  2. Step 2: Convert to fraction form
    39,931.12/59,816.49 = 19,880.20/x
  3. Step 3: Cross multiply
    39,931.12x = 59,816.49 × 19,880.20
  4. Step 4: Simplify right side
    39,931.12x = 1,189,163,784.50
  5. Step 5: Solve for x
    x = 1,189,163,784.50/39,931.12
  6. Step 6: Final answer
    x = 29,780.38

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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.