Home / 18,681.02-25,783.63-11,131.77

Finding the Fourth Proportional to 18,681.02, 25,783.63 and 11,131.77

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Solution

The fourth proportional to 18,681.02, 25,783.63 and 11,131.77 is: 15,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.02 : 25,783.63 = 11,131.77 : x
  2. Step 2: Convert to fraction form
    18,681.02/25,783.63 = 11,131.77/x
  3. Step 3: Cross multiply
    18,681.02x = 25,783.63 × 11,131.77
  4. Step 4: Simplify right side
    18,681.02x = 287,017,411.10
  5. Step 5: Solve for x
    x = 287,017,411.10/18,681.02
  6. Step 6: Final answer
    x = 15,364.12

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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.