Home / 15,580.13-21,500.64-8,506.58

Finding the Fourth Proportional to 15,580.13, 21,500.64 and 8,506.58

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Solution

The fourth proportional to 15,580.13, 21,500.64 and 8,506.58 is: 11,739.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.13 : 21,500.64 = 8,506.58 : x
  2. Step 2: Convert to fraction form
    15,580.13/21,500.64 = 8,506.58/x
  3. Step 3: Cross multiply
    15,580.13x = 21,500.64 × 8,506.58
  4. Step 4: Simplify right side
    15,580.13x = 182,896,806.71
  5. Step 5: Solve for x
    x = 182,896,806.71/15,580.13
  6. Step 6: Final answer
    x = 11,739.11

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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.