Home / 31,709.28-47,563.88-12,989.35

Finding the Fourth Proportional to 31,709.28, 47,563.88 and 12,989.35

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Solution

The fourth proportional to 31,709.28, 47,563.88 and 12,989.35 is: 19,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.28 : 47,563.88 = 12,989.35 : x
  2. Step 2: Convert to fraction form
    31,709.28/47,563.88 = 12,989.35/x
  3. Step 3: Cross multiply
    31,709.28x = 47,563.88 × 12,989.35
  4. Step 4: Simplify right side
    31,709.28x = 617,823,798.24
  5. Step 5: Solve for x
    x = 617,823,798.24/31,709.28
  6. Step 6: Final answer
    x = 19,484.01

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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.