Home / 21,565.05-29,762.73-13,070.58

Finding the Fourth Proportional to 21,565.05, 29,762.73 and 13,070.58

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Solution

The fourth proportional to 21,565.05, 29,762.73 and 13,070.58 is: 18,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.05 : 29,762.73 = 13,070.58 : x
  2. Step 2: Convert to fraction form
    21,565.05/29,762.73 = 13,070.58/x
  3. Step 3: Cross multiply
    21,565.05x = 29,762.73 × 13,070.58
  4. Step 4: Simplify right side
    21,565.05x = 389,016,143.48
  5. Step 5: Solve for x
    x = 389,016,143.48/21,565.05
  6. Step 6: Final answer
    x = 18,039.20

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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.