Home / 12,398,643.31-18,580,302.79-9,134,510.95

Finding the Fourth Proportional to 12,398,643.31, 18,580,302.79 and 9,134,510.95

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Solution

The fourth proportional to 12,398,643.31, 18,580,302.79 and 9,134,510.95 is: 13,688,754.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398,643.31 : 18,580,302.79 = 9,134,510.95 : x
  2. Step 2: Convert to fraction form
    12,398,643.31/18,580,302.79 = 9,134,510.95/x
  3. Step 3: Cross multiply
    12,398,643.31x = 18,580,302.79 × 9,134,510.95
  4. Step 4: Simplify right side
    12,398,643.31x = 169,721,979,289,570.53
  5. Step 5: Solve for x
    x = 169,721,979,289,570.53/12,398,643.31
  6. Step 6: Final answer
    x = 13,688,754.09

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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.