Home / 10,565.60-15,839.48-6,661.40

Finding the Fourth Proportional to 10,565.60, 15,839.48 and 6,661.40

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Solution

The fourth proportional to 10,565.60, 15,839.48 and 6,661.40 is: 9,986.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,565.60 : 15,839.48 = 6,661.40 : x
  2. Step 2: Convert to fraction form
    10,565.60/15,839.48 = 6,661.40/x
  3. Step 3: Cross multiply
    10,565.60x = 15,839.48 × 6,661.40
  4. Step 4: Simplify right side
    10,565.60x = 105,513,112.07
  5. Step 5: Solve for x
    x = 105,513,112.07/10,565.60
  6. Step 6: Final answer
    x = 9,986.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.