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Finding the Fourth Proportional to 12,347, 17,038.92 and 7,041.76

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Solution

The fourth proportional to 12,347, 17,038.92 and 7,041.76 is: 9,717.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347 : 17,038.92 = 7,041.76 : x
  2. Step 2: Convert to fraction form
    12,347/17,038.92 = 7,041.76/x
  3. Step 3: Cross multiply
    12,347x = 17,038.92 × 7,041.76
  4. Step 4: Simplify right side
    12,347x = 119,983,985.30
  5. Step 5: Solve for x
    x = 119,983,985.30/12,347
  6. Step 6: Final answer
    x = 9,717.66

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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.