Home / 15,312.90-21,132-9,025.26

Finding the Fourth Proportional to 15,312.90, 21,132 and 9,025.26

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Solution

The fourth proportional to 15,312.90, 21,132 and 9,025.26 is: 12,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.90 : 21,132 = 9,025.26 : x
  2. Step 2: Convert to fraction form
    15,312.90/21,132 = 9,025.26/x
  3. Step 3: Cross multiply
    15,312.90x = 21,132 × 9,025.26
  4. Step 4: Simplify right side
    15,312.90x = 190,721,794.32
  5. Step 5: Solve for x
    x = 190,721,794.32/15,312.90
  6. Step 6: Final answer
    x = 12,454.98

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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.