Home / 13,781,377.72-19,019,399.70-7,980,261.94

Finding the Fourth Proportional to 13,781,377.72, 19,019,399.70 and 7,980,261.94

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Solution

The fourth proportional to 13,781,377.72, 19,019,399.70 and 7,980,261.94 is: 11,013,397.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781,377.72 : 19,019,399.70 = 7,980,261.94 : x
  2. Step 2: Convert to fraction form
    13,781,377.72/19,019,399.70 = 7,980,261.94/x
  3. Step 3: Cross multiply
    13,781,377.72x = 19,019,399.70 × 7,980,261.94
  4. Step 4: Simplify right side
    13,781,377.72x = 151,779,791,547,557.41
  5. Step 5: Solve for x
    x = 151,779,791,547,557.41/13,781,377.72
  6. Step 6: Final answer
    x = 11,013,397.54

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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.