Home / 15,297.18-21,090.39-9,910.02

Finding the Fourth Proportional to 15,297.18, 21,090.39 and 9,910.02

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Solution

The fourth proportional to 15,297.18, 21,090.39 and 9,910.02 is: 13,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.18 : 21,090.39 = 9,910.02 : x
  2. Step 2: Convert to fraction form
    15,297.18/21,090.39 = 9,910.02/x
  3. Step 3: Cross multiply
    15,297.18x = 21,090.39 × 9,910.02
  4. Step 4: Simplify right side
    15,297.18x = 209,006,186.71
  5. Step 5: Solve for x
    x = 209,006,186.71/15,297.18
  6. Step 6: Final answer
    x = 13,663.05

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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.