Home / 15,778,543.47-21,772,731.20-9,161,838.53

Finding the Fourth Proportional to 15,778,543.47, 21,772,731.20 and 9,161,838.53

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Solution

The fourth proportional to 15,778,543.47, 21,772,731.20 and 9,161,838.53 is: 12,642,373.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778,543.47 : 21,772,731.20 = 9,161,838.53 : x
  2. Step 2: Convert to fraction form
    15,778,543.47/21,772,731.20 = 9,161,838.53/x
  3. Step 3: Cross multiply
    15,778,543.47x = 21,772,731.20 × 9,161,838.53
  4. Step 4: Simplify right side
    15,778,543.47x = 199,478,247,456,820.31
  5. Step 5: Solve for x
    x = 199,478,247,456,820.31/15,778,543.47
  6. Step 6: Final answer
    x = 12,642,373.98

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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.