Home / 12,931,515.40-19,425,266.70-12,455,624.20

Finding the Fourth Proportional to 12,931,515.40, 19,425,266.70 and 12,455,624.20

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Solution

The fourth proportional to 12,931,515.40, 19,425,266.70 and 12,455,624.20 is: 18,710,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931,515.40 : 19,425,266.70 = 12,455,624.20 : x
  2. Step 2: Convert to fraction form
    12,931,515.40/19,425,266.70 = 12,455,624.20/x
  3. Step 3: Cross multiply
    12,931,515.40x = 19,425,266.70 × 12,455,624.20
  4. Step 4: Simplify right side
    12,931,515.40x = 241,953,821,999,974.12
  5. Step 5: Solve for x
    x = 241,953,821,999,974.12/12,931,515.40
  6. Step 6: Final answer
    x = 18,710,399.71

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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.