Home / 12,889,654.47-17,787,368.45-7,088,436.23

Finding the Fourth Proportional to 12,889,654.47, 17,787,368.45 and 7,088,436.23

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Solution

The fourth proportional to 12,889,654.47, 17,787,368.45 and 7,088,436.23 is: 9,781,846.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889,654.47 : 17,787,368.45 = 7,088,436.23 : x
  2. Step 2: Convert to fraction form
    12,889,654.47/17,787,368.45 = 7,088,436.23/x
  3. Step 3: Cross multiply
    12,889,654.47x = 17,787,368.45 × 7,088,436.23
  4. Step 4: Simplify right side
    12,889,654.47x = 126,084,626,832,959.92
  5. Step 5: Solve for x
    x = 126,084,626,832,959.92/12,889,654.47
  6. Step 6: Final answer
    x = 9,781,846.92

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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.