Home / 15,822.10-21,831.54-9,108.01

Finding the Fourth Proportional to 15,822.10, 21,831.54 and 9,108.01

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Solution

The fourth proportional to 15,822.10, 21,831.54 and 9,108.01 is: 12,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.10 : 21,831.54 = 9,108.01 : x
  2. Step 2: Convert to fraction form
    15,822.10/21,831.54 = 9,108.01/x
  3. Step 3: Cross multiply
    15,822.10x = 21,831.54 × 9,108.01
  4. Step 4: Simplify right side
    15,822.10x = 198,841,775.48
  5. Step 5: Solve for x
    x = 198,841,775.48/15,822.10
  6. Step 6: Final answer
    x = 12,567.35

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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.