Home / 21,038,991,587.23-31,608,833,378.78-13,490,565,348.64

Finding the Fourth Proportional to 21,038,991,587.23, 31,608,833,378.78 and 13,490,565,348.64

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Solution

The fourth proportional to 21,038,991,587.23, 31,608,833,378.78 and 13,490,565,348.64 is: 20,268,130,747.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038,991,587.23 : 31,608,833,378.78 = 13,490,565,348.64 : x
  2. Step 2: Convert to fraction form
    21,038,991,587.23/31,608,833,378.78 = 13,490,565,348.64/x
  3. Step 3: Cross multiply
    21,038,991,587.23x = 31,608,833,378.78 × 13,490,565,348.64
  4. Step 4: Simplify right side
    21,038,991,587.23x = 426,421,032,290,704,818,176
  5. Step 5: Solve for x
    x = 426,421,032,290,704,818,176/21,038,991,587.23
  6. Step 6: Final answer
    x = 20,268,130,747.75

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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.