Home / 22,615.79-31,210.77-12,543.55

Finding the Fourth Proportional to 22,615.79, 31,210.77 and 12,543.55

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Solution

The fourth proportional to 22,615.79, 31,210.77 and 12,543.55 is: 17,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.79 : 31,210.77 = 12,543.55 : x
  2. Step 2: Convert to fraction form
    22,615.79/31,210.77 = 12,543.55/x
  3. Step 3: Cross multiply
    22,615.79x = 31,210.77 × 12,543.55
  4. Step 4: Simplify right side
    22,615.79x = 391,493,697.98
  5. Step 5: Solve for x
    x = 391,493,697.98/22,615.79
  6. Step 6: Final answer
    x = 17,310.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.