Home / 21,235,158.60-31,697,713.16-18,221,888.13

Finding the Fourth Proportional to 21,235,158.60, 31,697,713.16 and 18,221,888.13

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Solution

The fourth proportional to 21,235,158.60, 31,697,713.16 and 18,221,888.13 is: 27,199,805.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,158.60 : 31,697,713.16 = 18,221,888.13 : x
  2. Step 2: Convert to fraction form
    21,235,158.60/31,697,713.16 = 18,221,888.13/x
  3. Step 3: Cross multiply
    21,235,158.60x = 31,697,713.16 × 18,221,888.13
  4. Step 4: Simplify right side
    21,235,158.60x = 577,592,183,087,239.38
  5. Step 5: Solve for x
    x = 577,592,183,087,239.38/21,235,158.60
  6. Step 6: Final answer
    x = 27,199,805.47

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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.