Home / 12,312.08-16,979.13-9,802.47

Finding the Fourth Proportional to 12,312.08, 16,979.13 and 9,802.47

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Solution

The fourth proportional to 12,312.08, 16,979.13 and 9,802.47 is: 13,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.08 : 16,979.13 = 9,802.47 : x
  2. Step 2: Convert to fraction form
    12,312.08/16,979.13 = 9,802.47/x
  3. Step 3: Cross multiply
    12,312.08x = 16,979.13 × 9,802.47
  4. Step 4: Simplify right side
    12,312.08x = 166,437,412.45
  5. Step 5: Solve for x
    x = 166,437,412.45/12,312.08
  6. Step 6: Final answer
    x = 13,518.23

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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.