Home / 31,989.40-47,984.10-11,210.20

Finding the Fourth Proportional to 31,989.40, 47,984.10 and 11,210.20

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Solution

The fourth proportional to 31,989.40, 47,984.10 and 11,210.20 is: 16,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.40 : 47,984.10 = 11,210.20 : x
  2. Step 2: Convert to fraction form
    31,989.40/47,984.10 = 11,210.20/x
  3. Step 3: Cross multiply
    31,989.40x = 47,984.10 × 11,210.20
  4. Step 4: Simplify right side
    31,989.40x = 537,911,357.82
  5. Step 5: Solve for x
    x = 537,911,357.82/31,989.40
  6. Step 6: Final answer
    x = 16,815.30

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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.