Home / 44,012.12-66,013.50-12,421.40

Finding the Fourth Proportional to 44,012.12, 66,013.50 and 12,421.40

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Solution

The fourth proportional to 44,012.12, 66,013.50 and 12,421.40 is: 18,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,012.12 : 66,013.50 = 12,421.40 : x
  2. Step 2: Convert to fraction form
    44,012.12/66,013.50 = 12,421.40/x
  3. Step 3: Cross multiply
    44,012.12x = 66,013.50 × 12,421.40
  4. Step 4: Simplify right side
    44,012.12x = 819,980,088.90
  5. Step 5: Solve for x
    x = 819,980,088.90/44,012.12
  6. Step 6: Final answer
    x = 18,630.78

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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.