Home / 12,457.02-18,686.29-4,137.76

Finding the Fourth Proportional to 12,457.02, 18,686.29 and 4,137.76

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Solution

The fourth proportional to 12,457.02, 18,686.29 and 4,137.76 is: 6,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.02 : 18,686.29 = 4,137.76 : x
  2. Step 2: Convert to fraction form
    12,457.02/18,686.29 = 4,137.76/x
  3. Step 3: Cross multiply
    12,457.02x = 18,686.29 × 4,137.76
  4. Step 4: Simplify right side
    12,457.02x = 77,319,383.31
  5. Step 5: Solve for x
    x = 77,319,383.31/12,457.02
  6. Step 6: Final answer
    x = 6,206.89

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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.