Home / 13,109,498,432.71-19,655,792,975.12-5,142,471,671.39

Finding the Fourth Proportional to 13,109,498,432.71, 19,655,792,975.12 and 5,142,471,671.39

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Solution

The fourth proportional to 13,109,498,432.71, 19,655,792,975.12 and 5,142,471,671.39 is: 7,710,390,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109,498,432.71 : 19,655,792,975.12 = 5,142,471,671.39 : x
  2. Step 2: Convert to fraction form
    13,109,498,432.71/19,655,792,975.12 = 5,142,471,671.39/x
  3. Step 3: Cross multiply
    13,109,498,432.71x = 19,655,792,975.12 × 5,142,471,671.39
  4. Step 4: Simplify right side
    13,109,498,432.71x = 101,079,358,553,137,184,768
  5. Step 5: Solve for x
    x = 101,079,358,553,137,184,768/13,109,498,432.71
  6. Step 6: Final answer
    x = 7,710,390,986.50

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1.5x scale

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.