Home / 30,031.80-45,042.90-12,498.84

Finding the Fourth Proportional to 30,031.80, 45,042.90 and 12,498.84

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Solution

The fourth proportional to 30,031.80, 45,042.90 and 12,498.84 is: 18,746.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,031.80 : 45,042.90 = 12,498.84 : x
  2. Step 2: Convert to fraction form
    30,031.80/45,042.90 = 12,498.84/x
  3. Step 3: Cross multiply
    30,031.80x = 45,042.90 × 12,498.84
  4. Step 4: Simplify right side
    30,031.80x = 562,984,000.24
  5. Step 5: Solve for x
    x = 562,984,000.24/30,031.80
  6. Step 6: Final answer
    x = 18,746.26

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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.