Home / 21,984.66-30,327.35-13,488.67

Finding the Fourth Proportional to 21,984.66, 30,327.35 and 13,488.67

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Solution

The fourth proportional to 21,984.66, 30,327.35 and 13,488.67 is: 18,607.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.66 : 30,327.35 = 13,488.67 : x
  2. Step 2: Convert to fraction form
    21,984.66/30,327.35 = 13,488.67/x
  3. Step 3: Cross multiply
    21,984.66x = 30,327.35 × 13,488.67
  4. Step 4: Simplify right side
    21,984.66x = 409,075,718.13
  5. Step 5: Solve for x
    x = 409,075,718.13/21,984.66
  6. Step 6: Final answer
    x = 18,607.33

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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.