Home / 13,987.20-19,302.36-7,613.76

Finding the Fourth Proportional to 13,987.20, 19,302.36 and 7,613.76

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Solution

The fourth proportional to 13,987.20, 19,302.36 and 7,613.76 is: 10,507.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.20 : 19,302.36 = 7,613.76 : x
  2. Step 2: Convert to fraction form
    13,987.20/19,302.36 = 7,613.76/x
  3. Step 3: Cross multiply
    13,987.20x = 19,302.36 × 7,613.76
  4. Step 4: Simplify right side
    13,987.20x = 146,963,536.47
  5. Step 5: Solve for x
    x = 146,963,536.47/13,987.20
  6. Step 6: Final answer
    x = 10,507.00

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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.