Home / 12,961,720.48-17,887,118.16-7,160,501.92

Finding the Fourth Proportional to 12,961,720.48, 17,887,118.16 and 7,160,501.92

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Solution

The fourth proportional to 12,961,720.48, 17,887,118.16 and 7,160,501.92 is: 9,881,461.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961,720.48 : 17,887,118.16 = 7,160,501.92 : x
  2. Step 2: Convert to fraction form
    12,961,720.48/17,887,118.16 = 7,160,501.92/x
  3. Step 3: Cross multiply
    12,961,720.48x = 17,887,118.16 × 7,160,501.92
  4. Step 4: Simplify right side
    12,961,720.48x = 128,080,743,927,946.86
  5. Step 5: Solve for x
    x = 128,080,743,927,946.86/12,961,720.48
  6. Step 6: Final answer
    x = 9,881,461.66

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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.