Home / 21,000,525.40-31,482,125.70-13,815,501.40

Finding the Fourth Proportional to 21,000,525.40, 31,482,125.70 and 13,815,501.40

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Solution

The fourth proportional to 21,000,525.40, 31,482,125.70 and 13,815,501.40 is: 20,710,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,525.40 : 31,482,125.70 = 13,815,501.40 : x
  2. Step 2: Convert to fraction form
    21,000,525.40/31,482,125.70 = 13,815,501.40/x
  3. Step 3: Cross multiply
    21,000,525.40x = 31,482,125.70 × 13,815,501.40
  4. Step 4: Simplify right side
    21,000,525.40x = 434,941,351,683,326
  5. Step 5: Solve for x
    x = 434,941,351,683,326/21,000,525.40
  6. Step 6: Final answer
    x = 20,710,974.77

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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.