Home / 21,257,663,501.80-31,886,495,252.70-7,278,639,437.80

Finding the Fourth Proportional to 21,257,663,501.80, 31,886,495,252.70 and 7,278,639,437.80

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Solution

The fourth proportional to 21,257,663,501.80, 31,886,495,252.70 and 7,278,639,437.80 is: 10,917,959,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,663,501.80 : 31,886,495,252.70 = 7,278,639,437.80 : x
  2. Step 2: Convert to fraction form
    21,257,663,501.80/31,886,495,252.70 = 7,278,639,437.80/x
  3. Step 3: Cross multiply
    21,257,663,501.80x = 31,886,495,252.70 × 7,278,639,437.80
  4. Step 4: Simplify right side
    21,257,663,501.80x = 232,090,301,879,524,720,640
  5. Step 5: Solve for x
    x = 232,090,301,879,524,720,640/21,257,663,501.80
  6. Step 6: Final answer
    x = 10,917,959,156.70

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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.