Home / 15,485.77-21,369.28-8,586.87

Finding the Fourth Proportional to 15,485.77, 21,369.28 and 8,586.87

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Solution

The fourth proportional to 15,485.77, 21,369.28 and 8,586.87 is: 11,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.77 : 21,369.28 = 8,586.87 : x
  2. Step 2: Convert to fraction form
    15,485.77/21,369.28 = 8,586.87/x
  3. Step 3: Cross multiply
    15,485.77x = 21,369.28 × 8,586.87
  4. Step 4: Simplify right side
    15,485.77x = 183,495,186.42
  5. Step 5: Solve for x
    x = 183,495,186.42/15,485.77
  6. Step 6: Final answer
    x = 11,849.28

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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.