Home / 13,058.04-18,020.14-7,680.16

Finding the Fourth Proportional to 13,058.04, 18,020.14 and 7,680.16

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Solution

The fourth proportional to 13,058.04, 18,020.14 and 7,680.16 is: 10,598.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.04 : 18,020.14 = 7,680.16 : x
  2. Step 2: Convert to fraction form
    13,058.04/18,020.14 = 7,680.16/x
  3. Step 3: Cross multiply
    13,058.04x = 18,020.14 × 7,680.16
  4. Step 4: Simplify right side
    13,058.04x = 138,397,558.42
  5. Step 5: Solve for x
    x = 138,397,558.42/13,058.04
  6. Step 6: Final answer
    x = 10,598.65

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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.