Home / 12,960,009.20-19,440,013.80-8,676,988.40

Finding the Fourth Proportional to 12,960,009.20, 19,440,013.80 and 8,676,988.40

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Solution

The fourth proportional to 12,960,009.20, 19,440,013.80 and 8,676,988.40 is: 13,015,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960,009.20 : 19,440,013.80 = 8,676,988.40 : x
  2. Step 2: Convert to fraction form
    12,960,009.20/19,440,013.80 = 8,676,988.40/x
  3. Step 3: Cross multiply
    12,960,009.20x = 19,440,013.80 × 8,676,988.40
  4. Step 4: Simplify right side
    12,960,009.20x = 168,680,774,238,439.94
  5. Step 5: Solve for x
    x = 168,680,774,238,439.94/12,960,009.20
  6. Step 6: Final answer
    x = 13,015,482.60

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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.