Home / 15,630.30-21,570.30-8,557.38

Finding the Fourth Proportional to 15,630.30, 21,570.30 and 8,557.38

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Solution

The fourth proportional to 15,630.30, 21,570.30 and 8,557.38 is: 11,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.30 : 21,570.30 = 8,557.38 : x
  2. Step 2: Convert to fraction form
    15,630.30/21,570.30 = 8,557.38/x
  3. Step 3: Cross multiply
    15,630.30x = 21,570.30 × 8,557.38
  4. Step 4: Simplify right side
    15,630.30x = 184,585,253.81
  5. Step 5: Solve for x
    x = 184,585,253.81/15,630.30
  6. Step 6: Final answer
    x = 11,809.45

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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.