Home / 20,461.12-28,235.86-12,503.32

Finding the Fourth Proportional to 20,461.12, 28,235.86 and 12,503.32

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Solution

The fourth proportional to 20,461.12, 28,235.86 and 12,503.32 is: 17,254.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.12 : 28,235.86 = 12,503.32 : x
  2. Step 2: Convert to fraction form
    20,461.12/28,235.86 = 12,503.32/x
  3. Step 3: Cross multiply
    20,461.12x = 28,235.86 × 12,503.32
  4. Step 4: Simplify right side
    20,461.12x = 353,041,993.06
  5. Step 5: Solve for x
    x = 353,041,993.06/20,461.12
  6. Step 6: Final answer
    x = 17,254.28

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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.