Home / 18,412.16-25,425.02-13,688.24

Finding the Fourth Proportional to 18,412.16, 25,425.02 and 13,688.24

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Solution

The fourth proportional to 18,412.16, 25,425.02 and 13,688.24 is: 18,901.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.16 : 25,425.02 = 13,688.24 : x
  2. Step 2: Convert to fraction form
    18,412.16/25,425.02 = 13,688.24/x
  3. Step 3: Cross multiply
    18,412.16x = 25,425.02 × 13,688.24
  4. Step 4: Simplify right side
    18,412.16x = 348,023,682.86
  5. Step 5: Solve for x
    x = 348,023,682.86/18,412.16
  6. Step 6: Final answer
    x = 18,901.84

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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.