Home / 15,661.02-21,610.80-8,946.63

Finding the Fourth Proportional to 15,661.02, 21,610.80 and 8,946.63

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Solution

The fourth proportional to 15,661.02, 21,610.80 and 8,946.63 is: 12,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.02 : 21,610.80 = 8,946.63 : x
  2. Step 2: Convert to fraction form
    15,661.02/21,610.80 = 8,946.63/x
  3. Step 3: Cross multiply
    15,661.02x = 21,610.80 × 8,946.63
  4. Step 4: Simplify right side
    15,661.02x = 193,343,831.60
  5. Step 5: Solve for x
    x = 193,343,831.60/15,661.02
  6. Step 6: Final answer
    x = 12,345.55

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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.