Home / 14,970.40-20,656.74-8,681.56

Finding the Fourth Proportional to 14,970.40, 20,656.74 and 8,681.56

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Solution

The fourth proportional to 14,970.40, 20,656.74 and 8,681.56 is: 11,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,970.40 : 20,656.74 = 8,681.56 : x
  2. Step 2: Convert to fraction form
    14,970.40/20,656.74 = 8,681.56/x
  3. Step 3: Cross multiply
    14,970.40x = 20,656.74 × 8,681.56
  4. Step 4: Simplify right side
    14,970.40x = 179,332,727.71
  5. Step 5: Solve for x
    x = 179,332,727.71/14,970.40
  6. Step 6: Final answer
    x = 11,979.15

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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.