Home / 12,315.60-16,975.88-11,298.64

Finding the Fourth Proportional to 12,315.60, 16,975.88 and 11,298.64

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Solution

The fourth proportional to 12,315.60, 16,975.88 and 11,298.64 is: 15,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.60 : 16,975.88 = 11,298.64 : x
  2. Step 2: Convert to fraction form
    12,315.60/16,975.88 = 11,298.64/x
  3. Step 3: Cross multiply
    12,315.60x = 16,975.88 × 11,298.64
  4. Step 4: Simplify right side
    12,315.60x = 191,804,356.80
  5. Step 5: Solve for x
    x = 191,804,356.80/12,315.60
  6. Step 6: Final answer
    x = 15,574.10

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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.