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Finding the Fourth Proportional to 12,302.40, 18,353.04 and 10,574.40

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Solution

The fourth proportional to 12,302.40, 18,353.04 and 10,574.40 is: 15,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.40 : 18,353.04 = 10,574.40 : x
  2. Step 2: Convert to fraction form
    12,302.40/18,353.04 = 10,574.40/x
  3. Step 3: Cross multiply
    12,302.40x = 18,353.04 × 10,574.40
  4. Step 4: Simplify right side
    12,302.40x = 194,072,386.18
  5. Step 5: Solve for x
    x = 194,072,386.18/12,302.40
  6. Step 6: Final answer
    x = 15,775.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.