Home / 15,430.41-21,293.79-8,716.01

Finding the Fourth Proportional to 15,430.41, 21,293.79 and 8,716.01

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Solution

The fourth proportional to 15,430.41, 21,293.79 and 8,716.01 is: 12,027.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.41 : 21,293.79 = 8,716.01 : x
  2. Step 2: Convert to fraction form
    15,430.41/21,293.79 = 8,716.01/x
  3. Step 3: Cross multiply
    15,430.41x = 21,293.79 × 8,716.01
  4. Step 4: Simplify right side
    15,430.41x = 185,596,780.11
  5. Step 5: Solve for x
    x = 185,596,780.11/15,430.41
  6. Step 6: Final answer
    x = 12,027.99

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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.