Home / 13,013,358.78-19,403,695.38-12,655,827.18

Finding the Fourth Proportional to 13,013,358.78, 19,403,695.38 and 12,655,827.18

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Solution

The fourth proportional to 13,013,358.78, 19,403,695.38 and 12,655,827.18 is: 18,870,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013,358.78 : 19,403,695.38 = 12,655,827.18 : x
  2. Step 2: Convert to fraction form
    13,013,358.78/19,403,695.38 = 12,655,827.18/x
  3. Step 3: Cross multiply
    13,013,358.78x = 19,403,695.38 × 12,655,827.18
  4. Step 4: Simplify right side
    13,013,358.78x = 245,569,815,382,644.41
  5. Step 5: Solve for x
    x = 245,569,815,382,644.41/13,013,358.78
  6. Step 6: Final answer
    x = 18,870,594.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.