Home / 21,783.02-30,055.98-14,240.40

Finding the Fourth Proportional to 21,783.02, 30,055.98 and 14,240.40

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Solution

The fourth proportional to 21,783.02, 30,055.98 and 14,240.40 is: 19,648.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.02 : 30,055.98 = 14,240.40 : x
  2. Step 2: Convert to fraction form
    21,783.02/30,055.98 = 14,240.40/x
  3. Step 3: Cross multiply
    21,783.02x = 30,055.98 × 14,240.40
  4. Step 4: Simplify right side
    21,783.02x = 428,009,177.59
  5. Step 5: Solve for x
    x = 428,009,177.59/21,783.02
  6. Step 6: Final answer
    x = 19,648.76

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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.