Home / 15,308.04-21,130.40-9,020

Finding the Fourth Proportional to 15,308.04, 21,130.40 and 9,020

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Solution

The fourth proportional to 15,308.04, 21,130.40 and 9,020 is: 12,450.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.04 : 21,130.40 = 9,020 : x
  2. Step 2: Convert to fraction form
    15,308.04/21,130.40 = 9,020/x
  3. Step 3: Cross multiply
    15,308.04x = 21,130.40 × 9,020
  4. Step 4: Simplify right side
    15,308.04x = 190,596,208
  5. Step 5: Solve for x
    x = 190,596,208/15,308.04
  6. Step 6: Final answer
    x = 12,450.73

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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.