Home / 31,444.08-47,153.43-12,720.66

Finding the Fourth Proportional to 31,444.08, 47,153.43 and 12,720.66

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Solution

The fourth proportional to 31,444.08, 47,153.43 and 12,720.66 is: 19,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,444.08 : 47,153.43 = 12,720.66 : x
  2. Step 2: Convert to fraction form
    31,444.08/47,153.43 = 12,720.66/x
  3. Step 3: Cross multiply
    31,444.08x = 47,153.43 × 12,720.66
  4. Step 4: Simplify right side
    31,444.08x = 599,822,750.86
  5. Step 5: Solve for x
    x = 599,822,750.86/31,444.08
  6. Step 6: Final answer
    x = 19,075.86

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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.