Home / 13,987.46-21,057.77-12,762.74

Finding the Fourth Proportional to 13,987.46, 21,057.77 and 12,762.74

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Solution

The fourth proportional to 13,987.46, 21,057.77 and 12,762.74 is: 19,213.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.46 : 21,057.77 = 12,762.74 : x
  2. Step 2: Convert to fraction form
    13,987.46/21,057.77 = 12,762.74/x
  3. Step 3: Cross multiply
    13,987.46x = 21,057.77 × 12,762.74
  4. Step 4: Simplify right side
    13,987.46x = 268,754,832.32
  5. Step 5: Solve for x
    x = 268,754,832.32/13,987.46
  6. Step 6: Final answer
    x = 19,213.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.