Home / 15,529.71-21,445.22-9,866.28

Finding the Fourth Proportional to 15,529.71, 21,445.22 and 9,866.28

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Solution

The fourth proportional to 15,529.71, 21,445.22 and 9,866.28 is: 13,624.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.71 : 21,445.22 = 9,866.28 : x
  2. Step 2: Convert to fraction form
    15,529.71/21,445.22 = 9,866.28/x
  3. Step 3: Cross multiply
    15,529.71x = 21,445.22 × 9,866.28
  4. Step 4: Simplify right side
    15,529.71x = 211,584,545.18
  5. Step 5: Solve for x
    x = 211,584,545.18/15,529.71
  6. Step 6: Final answer
    x = 13,624.50

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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.