Home / 15,630.84-21,570.30-8,557.11

Finding the Fourth Proportional to 15,630.84, 21,570.30 and 8,557.11

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Solution

The fourth proportional to 15,630.84, 21,570.30 and 8,557.11 is: 11,808.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.84 : 21,570.30 = 8,557.11 : x
  2. Step 2: Convert to fraction form
    15,630.84/21,570.30 = 8,557.11/x
  3. Step 3: Cross multiply
    15,630.84x = 21,570.30 × 8,557.11
  4. Step 4: Simplify right side
    15,630.84x = 184,579,429.83
  5. Step 5: Solve for x
    x = 184,579,429.83/15,630.84
  6. Step 6: Final answer
    x = 11,808.67

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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.