Home / 15,216,111.53-20,985,990.10-13,376,636.77

Finding the Fourth Proportional to 15,216,111.53, 20,985,990.10 and 13,376,636.77

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Solution

The fourth proportional to 15,216,111.53, 20,985,990.10 and 13,376,636.77 is: 18,448,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216,111.53 : 20,985,990.10 = 13,376,636.77 : x
  2. Step 2: Convert to fraction form
    15,216,111.53/20,985,990.10 = 13,376,636.77/x
  3. Step 3: Cross multiply
    15,216,111.53x = 20,985,990.10 × 13,376,636.77
  4. Step 4: Simplify right side
    15,216,111.53x = 280,721,966,826,516
  5. Step 5: Solve for x
    x = 280,721,966,826,516/15,216,111.53
  6. Step 6: Final answer
    x = 18,448,995.08

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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.