Home / 12,970.28-19,473.69-6,649.76

Finding the Fourth Proportional to 12,970.28, 19,473.69 and 6,649.76

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Solution

The fourth proportional to 12,970.28, 19,473.69 and 6,649.76 is: 9,984.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,970.28 : 19,473.69 = 6,649.76 : x
  2. Step 2: Convert to fraction form
    12,970.28/19,473.69 = 6,649.76/x
  3. Step 3: Cross multiply
    12,970.28x = 19,473.69 × 6,649.76
  4. Step 4: Simplify right side
    12,970.28x = 129,495,364.81
  5. Step 5: Solve for x
    x = 129,495,364.81/12,970.28
  6. Step 6: Final answer
    x = 9,984.01

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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.