Home / 21,005,014.30-31,507,521.45-17,757,756.70

Finding the Fourth Proportional to 21,005,014.30, 31,507,521.45 and 17,757,756.70

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Solution

The fourth proportional to 21,005,014.30, 31,507,521.45 and 17,757,756.70 is: 26,636,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,014.30 : 31,507,521.45 = 17,757,756.70 : x
  2. Step 2: Convert to fraction form
    21,005,014.30/31,507,521.45 = 17,757,756.70/x
  3. Step 3: Cross multiply
    21,005,014.30x = 31,507,521.45 × 17,757,756.70
  4. Step 4: Simplify right side
    21,005,014.30x = 559,502,900,129,131.19
  5. Step 5: Solve for x
    x = 559,502,900,129,131.19/21,005,014.30
  6. Step 6: Final answer
    x = 26,636,635.05

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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.