Home / 11,142.04-15,376.08-6,426.40

Finding the Fourth Proportional to 11,142.04, 15,376.08 and 6,426.40

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Solution

The fourth proportional to 11,142.04, 15,376.08 and 6,426.40 is: 8,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.04 : 15,376.08 = 6,426.40 : x
  2. Step 2: Convert to fraction form
    11,142.04/15,376.08 = 6,426.40/x
  3. Step 3: Cross multiply
    11,142.04x = 15,376.08 × 6,426.40
  4. Step 4: Simplify right side
    11,142.04x = 98,812,840.51
  5. Step 5: Solve for x
    x = 98,812,840.51/11,142.04
  6. Step 6: Final answer
    x = 8,868.47

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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.