Home / 21,041.90-29,025.58-13,485.55

Finding the Fourth Proportional to 21,041.90, 29,025.58 and 13,485.55

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Solution

The fourth proportional to 21,041.90, 29,025.58 and 13,485.55 is: 18,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.90 : 29,025.58 = 13,485.55 : x
  2. Step 2: Convert to fraction form
    21,041.90/29,025.58 = 13,485.55/x
  3. Step 3: Cross multiply
    21,041.90x = 29,025.58 × 13,485.55
  4. Step 4: Simplify right side
    21,041.90x = 391,425,697.81
  5. Step 5: Solve for x
    x = 391,425,697.81/21,041.90
  6. Step 6: Final answer
    x = 18,602.20

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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.