Home / 12,931.29-19,398.90-6,602.70

Finding the Fourth Proportional to 12,931.29, 19,398.90 and 6,602.70

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Solution

The fourth proportional to 12,931.29, 19,398.90 and 6,602.70 is: 9,905.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.29 : 19,398.90 = 6,602.70 : x
  2. Step 2: Convert to fraction form
    12,931.29/19,398.90 = 6,602.70/x
  3. Step 3: Cross multiply
    12,931.29x = 19,398.90 × 6,602.70
  4. Step 4: Simplify right side
    12,931.29x = 128,085,117.03
  5. Step 5: Solve for x
    x = 128,085,117.03/12,931.29
  6. Step 6: Final answer
    x = 9,905.05

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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.