Home / 15,565.97-21,485.63-10,851.77

Finding the Fourth Proportional to 15,565.97, 21,485.63 and 10,851.77

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Solution

The fourth proportional to 15,565.97, 21,485.63 and 10,851.77 is: 14,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.97 : 21,485.63 = 10,851.77 : x
  2. Step 2: Convert to fraction form
    15,565.97/21,485.63 = 10,851.77/x
  3. Step 3: Cross multiply
    15,565.97x = 21,485.63 × 10,851.77
  4. Step 4: Simplify right side
    15,565.97x = 233,157,034.77
  5. Step 5: Solve for x
    x = 233,157,034.77/15,565.97
  6. Step 6: Final answer
    x = 14,978.64

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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.