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Finding the Fourth Proportional to 12,681.76, 19,036.02 and 10,368.40

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Solution

The fourth proportional to 12,681.76, 19,036.02 and 10,368.40 is: 15,563.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.76 : 19,036.02 = 10,368.40 : x
  2. Step 2: Convert to fraction form
    12,681.76/19,036.02 = 10,368.40/x
  3. Step 3: Cross multiply
    12,681.76x = 19,036.02 × 10,368.40
  4. Step 4: Simplify right side
    12,681.76x = 197,373,069.77
  5. Step 5: Solve for x
    x = 197,373,069.77/12,681.76
  6. Step 6: Final answer
    x = 15,563.54

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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.