Home / 15,831.95-21,848.00-8,758.22

Finding the Fourth Proportional to 15,831.95, 21,848.00 and 8,758.22

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Solution

The fourth proportional to 15,831.95, 21,848.00 and 8,758.22 is: 12,086.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.95 : 21,848.00 = 8,758.22 : x
  2. Step 2: Convert to fraction form
    15,831.95/21,848.00 = 8,758.22/x
  3. Step 3: Cross multiply
    15,831.95x = 21,848.00 × 8,758.22
  4. Step 4: Simplify right side
    15,831.95x = 191,349,437.53
  5. Step 5: Solve for x
    x = 191,349,437.53/15,831.95
  6. Step 6: Final answer
    x = 12,086.29

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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.