Home / 12,781,831.18-17,638,946.76-7,275,205.98

Finding the Fourth Proportional to 12,781,831.18, 17,638,946.76 and 7,275,205.98

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Solution

The fourth proportional to 12,781,831.18, 17,638,946.76 and 7,275,205.98 is: 10,039,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,831.18 : 17,638,946.76 = 7,275,205.98 : x
  2. Step 2: Convert to fraction form
    12,781,831.18/17,638,946.76 = 7,275,205.98/x
  3. Step 3: Cross multiply
    12,781,831.18x = 17,638,946.76 × 7,275,205.98
  4. Step 4: Simplify right side
    12,781,831.18x = 128,326,970,896,748.59
  5. Step 5: Solve for x
    x = 128,326,970,896,748.59/12,781,831.18
  6. Step 6: Final answer
    x = 10,039,795.48

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1.5x scale

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.