Home / 30,631,946.40-42,274,177.32-18,715,862.16

Finding the Fourth Proportional to 30,631,946.40, 42,274,177.32 and 18,715,862.16

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Solution

The fourth proportional to 30,631,946.40, 42,274,177.32 and 18,715,862.16 is: 25,829,167.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631,946.40 : 42,274,177.32 = 18,715,862.16 : x
  2. Step 2: Convert to fraction form
    30,631,946.40/42,274,177.32 = 18,715,862.16/x
  3. Step 3: Cross multiply
    30,631,946.40x = 42,274,177.32 × 18,715,862.16
  4. Step 4: Simplify right side
    30,631,946.40x = 791,197,675,648,518.25
  5. Step 5: Solve for x
    x = 791,197,675,648,518.25/30,631,946.40
  6. Step 6: Final answer
    x = 25,829,167.54

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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.