Home / 15,643.76-21,588.40-8,570.18

Finding the Fourth Proportional to 15,643.76, 21,588.40 and 8,570.18

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Solution

The fourth proportional to 15,643.76, 21,588.40 and 8,570.18 is: 11,826.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.76 : 21,588.40 = 8,570.18 : x
  2. Step 2: Convert to fraction form
    15,643.76/21,588.40 = 8,570.18/x
  3. Step 3: Cross multiply
    15,643.76x = 21,588.40 × 8,570.18
  4. Step 4: Simplify right side
    15,643.76x = 185,016,453.77
  5. Step 5: Solve for x
    x = 185,016,453.77/15,643.76
  6. Step 6: Final answer
    x = 11,826.85

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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.