Home / 15,815.02-21,830.16-10,511.14

Finding the Fourth Proportional to 15,815.02, 21,830.16 and 10,511.14

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Solution

The fourth proportional to 15,815.02, 21,830.16 and 10,511.14 is: 14,508.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.02 : 21,830.16 = 10,511.14 : x
  2. Step 2: Convert to fraction form
    15,815.02/21,830.16 = 10,511.14/x
  3. Step 3: Cross multiply
    15,815.02x = 21,830.16 × 10,511.14
  4. Step 4: Simplify right side
    15,815.02x = 229,459,867.98
  5. Step 5: Solve for x
    x = 229,459,867.98/15,815.02
  6. Step 6: Final answer
    x = 14,508.98

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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.